Changelog

2 November 2026

• added

  500 English Verbs (French) — 500 essential spoken English verbs with French meaning, phonetic pronunciation, and contextual sentences in a free 108-page PDF.

• added

  GraphQL Formatter — format or minify queries and schemas, keep comments, and find syntax errors by line and column.

• added

  Subnet Calculator — get the network, broadcast, host range and masks for any IPv4 or IPv6 subnet, then split a block or plan VLSM by host count.

• added

  .gitignore Generator — build a clean file from 33 templates, then test real paths to see what is ignored and which rule decided it.

1 November 2026

• added

  500 English Verbs (Portuguese) — 500 essential spoken English verbs with Portuguese meaning, phonetic pronunciation, and contextual sentences in a free 108-page PDF.

• added

  Chmod Calculator — tick boxes or type 755, rwxr-xr-x or u+x to get the command, a plain-English reading, and warnings for risky permissions.

• added

  CSV to JSON Converter — turn CSV or TSV into JSON with safe number detection, nested dot headers and a clear list of problems in the file.

• added

  HTML Viewer — type HTML, CSS and JavaScript and see the page live, at phone or tablet width, with its console output underneath.

31 October 2026

• added

  500 English Verbs (Hindi) — 500 essential spoken English verbs with Hindi meaning, Devanagari pronunciation, and contextual sentences in a free 108-page PDF.

• added

  SVG Path Editor — paste a path or draw one, drag its points and curve handles, and copy it as absolute, relative or minified data.

• added

  Image to Text Converter — pull the text out of screenshots, photos and scans in 20 languages including Bangla, with OCR that runs in your browser.

• added

  CSS Unit Converter — convert px to rem, em, vw and 11 more units with your own root size and viewport, or rewrite a whole stylesheet between px and rem.

30 October 2026

• added

  500 Verbos en Inglés (Spanish) — 500 everyday English verbs with Spanish pronunciation, meaning and example sentences across 16 chapters and 108 pages.

• added

  CSS Grid Generator — set columns, rows and gaps, drag to draw named areas, and copy grid-template-areas CSS, line-number CSS or Tailwind with the HTML.

• added

  Barcode Generator — make Code 128, EAN-13, UPC-A, EAN-8, Code 39 and ITF-14 barcodes with check digits added for you, and download them as PNG or SVG.

• added

  Image Color Picker — click any spot in a photo, logo or screenshot to get its HEX, RGB, HSL and CMYK, with a magnifier and a palette you can copy as CSS or Tailwind.

29 October 2026

• added

  Photo Collage Maker — arrange up to nine photos in 12 layouts for posts, stories or prints, frame each one by dragging, and download without uploading anything.

• added

  HTML to Markdown Converter — paste formatted text from a web page or Google Docs, or raw HTML, and copy clean GitHub Markdown with tables, task lists and code blocks.

• added

  Random String Generator — make up to 1,000 unique random strings from letters, digits, hex, Base58 or your own characters, with prefixes and grouping.

28 October 2026

• added

  Fancy Text Generator — type once and copy your text in 21 Unicode styles for bios and posts, or turn fancy text back into plain letters.

• added

  Table Generator — fill a grid or paste cells from a spreadsheet, then copy the table as Markdown, HTML, LaTeX, ASCII or CSV.

• added

  Reading Speed Test — time yourself on a passage in 20 languages or your own text, get words and characters per minute, and check what you recalled.

• added

  Typing Speed Test — type real passages in 20 languages, race a pace bot, and see live WPM, keystroke accuracy and a speed graph at the end.

27 October 2026

• added

  Block Stacker — a falling-blocks puzzle with hold, a three-piece preview, ghost piece, wall kicks, levels, touch buttons and a saved best score.

• added

  Minesweeper — the classic on three board sizes, with a first click that is always safe, chording, flag mode for phones, a timer and best times.

• added

  Connect Four — play the computer at three levels or a friend on one screen, with undo, hints, keyboard play and sound.

26 October 2026

• added

  Topological Sort Visualizer — step through Kahn's algorithm on your own directed graph, with the queue, in-degrees, a lexicographic mode and cycle detection.

• added

  Sign PDF — draw, type or upload your signature, place it and the date on any page of a PDF, and download the signed copy. Nothing is uploaded or stored.

• added

  Reorder PDF Pages — drag page thumbnails into a new order, delete or reverse pages, or type an order like 3, 1, 2, 8-5, all in your browser.

25 October 2026

• added

  Map Animation Generator — ten documentary-style animated maps (flight routes, country highlights, networks, heatmaps, zooms and more), recorded as 1080p video in your browser.

• added

  Webcam Test — check your camera before a call: live picture, the resolution and frame rate it really delivers, its maximum, a lighting check and a snapshot.

• added

  Video to GIF Converter — turn a few seconds of an MP4, WebM or MOV into an animated GIF in your browser, with frame rate, width, speed and looping; nothing is uploaded.

24 October 2026

• added

  Instrument Tuner — tune guitar, bass, ukulele, violin and more through your microphone, with a cents needle, automatic string detection and reference tones.

• added

  Kanban Board — a free online board with drag-and-drop cards, WIP limits that flag an overloaded column, priorities and Markdown export, saved in your browser.

• added

  Rebar Weight Calculator — turn a bar schedule into kilograms or pounds of steel per bar size, with wastage, cost and a weight chart for metric and US bars.

23 October 2026

• added

  Map Scale Calculator — turn a ruler measurement on a map into real distance at any 1 : N scale, or find the scale from two distances, with a ready-sized scale bar.

• added

  Land Unit Converter — convert land area between bigha, katha, decimal, acre, hectare, square feet, marla and more, with the bigha sized for your region.

22 October 2026

• added

  Online Rich Text Editor — write and format documents in your browser with headings, lists, tables and images, auto-saved locally and exported as HTML, Markdown or plain text.

• added

  Gear Ratio Calculator — enter the teeth on each gear, chain or belt stage to get the overall ratio, output speed, torque and which way the output turns.

• added

  Ideal Gas Law Calculator — solve PV = nRT for pressure, volume, moles or temperature in any units, with grams of a named gas, molar volume and density.

• added

  Wheelchair Ramp Calculator — enter the rise to get the ramp length, runs, landings and handrail needs, checked against the 2010 ADA Standards.

21 October 2026

• added

  PDF Page Border Generator — put a solid, double, dashed or certificate frame around the pages of a PDF, in any colour and thickness, with a live preview of the page you are working on.

• changed

  Avro Phonetic Bangla Typing — now with Bangla voice typing: press the microphone, speak, and the words land in the box in Bangla, ready to mix with typing.

• added

  Pipe Slope Calculator — find the fall, slope or run of a drain pipe, see the slope as %, 1:N or inches per foot, and check it against the plumbing code minimum.

• added

  Ohm's Law Calculator — type any two of voltage, current, resistance and power to get the other two, with the nearest standard resistor and its wattage.

• added

  Generator Size Calculator — list the appliances you need in a power cut and get the generator size in watts and kVA, counting each motor's start-up surge.

20 October 2026

• changed

  Graph Visualizer — new layout physics: graphs now settle into a clean shape in the middle of the canvas on their own instead of sticking to its edges, neighbours follow a dragged node like springs, a single click pins a node and a double-click releases it, and editing the edge list no longer scrambles the drawing.

• added

  Battery Bank & Backup Time Calculator — size an inverter, IPS or solar battery bank for your load and backup hours, or find how long the batteries you have will last.

• added

  Paint Calculator for Rooms & Ceilings — work out how much paint a room needs from its size, doors, windows and coats, with primer and the mix of tins to buy.

• added

  DNA Transcription & Translation Tool — paste a DNA template strand to get the mRNA transcript, codon-by-codon table, amino acid chain and GC content.

• added

  Wavelength to Frequency Converter — turn a wavelength, frequency or period into the other two for light, radio or sound, with photon energy, the spectrum band and the nearest musical note.

19 October 2026

• changed

  Tools remember your input — the numbers, text and options you enter now stay in your browser, so a reload or a visit days later picks up where you left off. Nothing is sent anywhere, and Clear or Reset still wipes it.

• changed

  Timer alerts — the Pomodoro, Focus and Countdown timers now ring with a sound you choose (chime, bell, alarm or soft) until you click, keep exact time in background tabs, and can send a notification when you are in another tab.

• added

  Chemical Equation Balancer — balance any chemical equation, ionic and redox included, with an atom-by-atom check and a mass check.

• added

  Citation Generator — build APA 7, MLA 9 and Chicago citations for books, journal articles, websites and newspapers, with the in-text citation or first footnote ready to copy.

• added

  Truth Table Generator (Boolean) — turn any logic expression into a full truth table with minterms and SOP/POS forms, and check whether two expressions are equivalent.

18 October 2026

• added

  Sleep Debt Calculator — log a week of sleep to see your sleep debt, which nights fell short, and how many nights of extra sleep it takes to pay it back.

• added

  Daily Protein Intake Calculator — get a daily protein target in grams from body weight, goal (build, cut, maintain) and activity level, with a food portion guide and per-meal breakdown.

• added

  Commute Cost Calculator — see what driving to work costs per day, month and year in fuel, parking and tolls, with the CO₂, the hours and a transit-pass comparison.

17 October 2026

• added

  Ovulation & Fertility Window Calculator — enter your last period date, cycle length and luteal phase to see your estimated ovulation day, 6-day fertile window, next period date and a colour-coded cycle timeline.

• added

  One-Rep Max Calculator (1RM) — estimate your max from any set of 1 to 20 reps with seven formulas side by side, plus a training table rounded to your plates.

16 October 2026

• added

  Daily Water Intake Calculator — enter your weight, activity level and climate to get a personalised daily hydration target in mL, litres, fl oz or cups, with a per-hour pacing breakdown.

• added

  Normal Distribution Calculator — enter a mean, standard deviation and query value to get z-score, CDF, right-tail probability and percentile rank, with a live bell-curve visualisation and optional interval probability panel.

• added

  Pie Chart Generator — paste labels and values to draw a pie or donut chart whose percentages always add up to 100%, then download it as PNG or SVG.

15 October 2026

• added

  Data Anonymizer — paste a CSV, toggle which columns hold PII, and choose Redact, Hash or Fake per column to produce an anonymised file without uploading anything.

• added

  Median Calculator — paste any list of numbers to find the median instantly, with a sorted strip that highlights the middle value(s) and a step-by-step calculation for both odd and even counts.

• added

  Profit Margin Calculator — work out profit, gross margin and markup from cost and price, or find the price that hits a target margin, with batch totals.

14 October 2026

• added

  Speed Distance Time Calculator — solve for speed, distance or time by entering any two values, with a full conversion table across 7 speed units, 7 distance units and 3 time units.

• added

  Mortgage Calculator — monthly payment, total interest, and a full amortisation schedule for any fixed-rate loan, with an extra-payment helper that shows exactly how many months and dollars you save.

• added

  Working Days Calculator — count business days between two dates, excluding weekends and any custom holidays you supply, with a 5- or 6-day work-week toggle and an Add N Working Days forward helper.

• added

  Factorial Calculator — compute n! for any n from 0 to 500 with exact BigInt precision, see the digit count, trailing zeros and Stirling approximation, and solve P(n,r) and C(n,r) in the same tool.

• added

  Scientific Notation Converter — turn any list of numbers into scientific, E, engineering and standard notation, with significant figures, SI prefixes and LaTeX output.

13 October 2026

• added

  CPA (Cost Per Acquisition) Calculator — solve for CPA, total conversions or ad spend from the other two, set a target CPA to see the conversion gap, and compare your rate against Google Search, Meta, LinkedIn, Google Shopping and Email benchmarks. Fully client-side.

• added

  Recipe Schema JSON-LD Generator — build a schema.org Recipe block with ingredients, step-by-step HowToStep instructions, ISO 8601 cooking times, nutrition info and aggregate ratings. Paste the script tag into your page head to unlock Google's recipe rich result.

• added

  Social Media Calendar Planner — plan a month of posts across 8 platforms with idea, draft, scheduled and posted statuses, caption limit checks per platform, and CSV or .ics calendar export.

12 October 2026

• added

  Twitter Card Tag Generator — generate twitter:card, twitter:title, twitter:description and twitter:image meta tags for summary, large-image, player and app cards, with a live card preview. Paste the HTML block directly into your page head.

• added

  Crypto DCA Simulator — model a dollar-cost averaging strategy for any asset: set start and end prices, number of periods and investment amount to see average cost basis, portfolio value, profit/loss, and how DCA compares to a lump-sum entry. Fully offline.

• added

  IPFS CID Inspector & Converter — decode any CIDv0 or CIDv1 into its multibase, multicodec, hash function, digest length, and raw digest bytes, with one-click conversion between CIDv0 and CIDv1 base32 forms. All client-side.

• added

  Raw Ethereum Transaction Decoder — paste any RLP-encoded hex transaction (legacy, EIP-2930, EIP-1559) to instantly see every field: nonce, gas, value, recipient, calldata with selector labels, access list, and ECDSA signature components. Runs entirely offline.

11 October 2026

• added

  WIF Private Key Converter — convert a raw 32-byte hex private key to Wallet Import Format and back. Supports mainnet/testnet, compressed/uncompressed public key flag, full checksum verification. All offline.

• added

  Browser Storage Inspector — see all cookies, localStorage, sessionStorage and IndexedDB databases this site has set in your browser. Live refresh, copy as JSON, and clear storage with one click.

• added

  AES Text Encryptor / Decryptor — encrypt any text string with a passphrase using AES-256-GCM and PBKDF2, get a portable Base64 ciphertext back. Runs entirely in the browser; nothing is uploaded.

10 October 2026

• added

  SHA-256 Hash Generator — type text or paste hex bytes and see the SHA-256 digest instantly in hex, Base64 or Base64URL. Runs entirely in the browser via Web Crypto; nothing is uploaded.

• added

  Hashing & Checksums category launched — all 75 planned categories now have at least one live tool. SHA-256 starts the category; SHA-512, MD5, BLAKE2, HMAC and bcrypt generators follow.

• added

  SQL Query Formatter & Beautifier — paste an ugly one-line query and get back readable SQL with uppercased keywords, clauses on their own lines, and indented subqueries. Handles comments, string literals and qualified names.

• added

  Database & SQL Tools category launched — a new hub for SQL tooling starting with the SQL Query Formatter & Beautifier; a visual query builder and JOIN visualizer are queued next.

• added

  cURL Command Builder — fill in a form with method, URL, headers, auth (Bearer, Basic with auto-Base64, API key), body and flags, and get a shell-safe cURL command ready to paste.

• added

  API & HTTP Tools category launched — a new hub for API and HTTP tooling starting with the cURL Command Builder; webhook builders, HTTP header reference, OpenAPI viewer and GraphQL formatter are queued next.

9 October 2026

• added

  IPv4 / IPv6 Address Validator & Class Info — validate any IP address and instantly see its class, scope, private/public status, binary, hex and 32-bit forms, plus RFC classification. Works offline; nothing is sent to a server.

• added

  Network & IP Tools category launched — a new hub for IP validation, subnet calculation, CIDR, DNS records and bandwidth tools, starting with the IPv4 / IPv6 Address Validator.

• added

  Docker Compose Generator — build a docker-compose.yml from forms: add services, map ports, set environment variables, mount volumes, wire dependencies and healthchecks, then download a ready-to-run YAML file.

• added

  DevOps & Config Generators category launched — a new hub for config-file scaffolding starting with the Docker Compose Generator; Dockerfile, GitHub Actions, Nginx and .gitignore generators are queued next.

• added

  Cron Expression Explainer & Builder — reads any cron schedule back in plain English, lists its next 10 run times in your time zone or UTC, and builds new schedules from presets or five field boxes.

• added

  Web Dev Helpers category launched — a new hub for everyday developer helpers such as cron, regex and URL encoding, starting with the Cron Expression Explainer; chmod, semver and user-agent tools are queued next.

• added

  JSON to CSV Converter — Flatten & Export — turns JSON arrays, whole API responses or JSON Lines into a spreadsheet-ready CSV, flattening nested objects into their own columns and quoting commas and quotes correctly, with a preview table and an Excel-friendly download.

• added

  Data Format Converters category launched — a new hub for moving data between JSON, CSV, YAML, TOML and spreadsheets, starting with the JSON to CSV Converter; CSV to JSON, YAML and type-definition generators are queued next.

8 October 2026

• added

  SVG Optimizer — Minify & Clean SVG — strips editor metadata, rounds path data, shortens colours and removes unused IDs from an SVG, then compares the old and new renders pixel by pixel so you can see nothing visible changed.

• added

  SVG & Vector Tools category launched — a new hub for cleaning and building vector graphics, starting with the SVG Optimizer; a path builder, icon generator and shape creator are queued next.

• added

  Duotone Image Effect Generator — upload any photo, pick two colours, and download a duotone PNG instantly. Eight built-in presets, intensity slider, blend modes, and a built-in demo image so you can try it without uploading.

• added

  Image Effects & Filters category launched — a new hub for canvas-based image effects, starting with Duotone; Noise/Grain Generator, Face Blur Redaction and Image Filter Creator are queued next.

• added

  Typography Scale Generator — pick any modular scale ratio (Major Third, Perfect Fourth, Golden Ratio and more), set your base size and step count, and export a ready-to-paste CSS variables block, Tailwind fontSize config, SCSS variables or Markdown table.

• added

  Layout & Typography category launched — a new hub for type scale generators, CSS spacing calculators, grid system builders and design system tools, starting with the Typography Scale Generator.

7 October 2026

• added

  CSS Box Shadow Generator — build multi-layer box-shadows visually with per-layer offset, blur, spread, opacity and inset controls, preview on light/dark/colored backgrounds, and copy production-ready CSS in one click.

• added

  CSS Generators category launched — a new hub for CSS code generators, starting with Box Shadow Generator; Border Radius Generator, CSS Filter Generator and CSS Animation Generator are queued next.

6 October 2026

• added

  Image to Base64 Converter — convert any JPEG, PNG, WebP, GIF or SVG to a data URL, raw Base64 string or CSS background-image declaration, entirely in your browser.

• added

  Image Converters & Generators category launched — a new hub for image format conversion, favicon generation, placeholder images, barcodes and more, starting with Image to Base64 Converter.

5 October 2026

• added

  Color Mixer — blend two hex colors across 7 linear-RGB midpoints, with a contrast ratio badge, per-swatch copy buttons and a one-click CSS custom properties export.

• added

  Color Tools & Palettes category launched — a new hub for color utilities, starting with Color Mixer; Color Shades & Tints Generator, Color Harmony Finder, Color Blindness Simulator and WCAG Color Accessibility Report are queued next.

4 October 2026

• added

  Markdown Previewer — write Markdown and see the formatted output live in a split view, with GFM table support, fenced code blocks, blockquotes and instant copy.

• added

  Markdown Tools category launched — a new hub for Markdown utilities, starting with Markdown Previewer; HTML to Markdown Converter, Interactive Cheatsheet and GitHub README Generator are queued next.

3 October 2026

• added

  String Escape / Unescape — escape and unescape strings for HTML, JavaScript and URL contexts in one tool, with a swap button for instant round-trip verification.

• added

  Encoding & Escaping category launched — a new hub for string encoding utilities, starting with String Escape / Unescape; Unicode Code Point Converter, Base32 Encoder and Hex Dump Viewer are queued next.

• added

  Pig Latin Converter — translate any English text to Pig Latin instantly, with full support for consonant clusters, vowel-initial words, capitalisation mirroring and punctuation preservation.

• added

  Text & Font Generators category launched — a new hub for novelty text converters, starting with Pig Latin; Zalgo text, fancy Unicode fonts, upside-down text and strikethrough generators are queued next.

2 October 2026

• added

  Text to Markdown Table Converter — paste CSV, TSV or any delimited text and get a Markdown pipe table, HTML table or TSV back, with auto-delimiter detection, quoted-field support and per-column alignment.

• added

  Table & Spreadsheet Tools category launched — a new hub for CSV and table utilities, starting with the Markdown Table Converter; CSV to HTML, Pivot Table Builder and duplicate-row removal are queued next.

• added

  Reaction Time Test — measure your simple reaction time across 5 rounds with a sub-millisecond timer, false-start detection, and a median score with a rating.

• added

  Brain Training category launched — a new hub for cognitive and reflex games, starting with Reaction Time Test; Memory Match, Aim Trainer and Typing Speed Race are queued next.

• added

  Snake Game — Play Classic Snake Online — classic Snake on a 20 × 20 board with walls or wrap-around edges, three speeds, swipe and keyboard controls, and a best score saved for each setting.

• added

  Arcade & Reflex Games category launched — a new hub for quick real-time games, starting with Snake; block stacker, brick breaker and pong are queued next.

• added

  Sudoku — uniqueness-verified puzzles at four difficulty levels (Easy to Expert), with pencil-mark notes, naked-single hints, an error counter, and a live timer.

• added

  Puzzle Games category launched — a new hub for logic and word puzzles in the browser, starting with Sudoku; Minesweeper, 2048 and the sliding puzzle are queued next.

• added

  Tic-Tac-Toe — play against an easy, medium or unbeatable computer, or a friend on the same screen, with a score tally and hints showing which squares win, draw or lose.

• added

  Board & Card Games category launched — a new hub for classic games in the browser, starting with Tic-Tac-Toe; the Dice Roller is listed here too, and Connect Four and solitaire are queued next.

• added

  Dijkstra Shortest Path Visualizer — step through Dijkstra's algorithm on your own weighted graph, with every queue pop and relaxation shown and a C++ template to copy.

• added

  DOCX to Text Converter — pull the text out of a Word .docx or OpenDocument .odt file as plain text or Markdown, keeping headings, lists and tables.

• added

  Document Tools category launched — a new hub for working with Word and PDF documents, starting with DOCX to Text; PDF to Text and the PDF page numberer are listed here too.

• added

  Add Page Numbers to PDF — number a PDF's pages as 1, Page 1 or Page 1 of 12 in any corner, skip a cover page, and mirror numbers for double-sided printing.

• added

  Mic Test — check your microphone with a live level meter, waveform, noise floor and clipping alerts, then record a short clip to hear how you sound.

• added

  Device & Browser Tests category launched — a new hub for checking your own hardware before a call, starting with the Mic Test; camera and connection tests are queued next.

• added

  Screen Recorder — record your screen, a window or a browser tab with sound and microphone narration, then download it as MP4 or WebM with no watermark.

• added

  Video & Screen Tools category launched — a new hub for video work in the browser, starting with the Screen Recorder; a video cutter and video-to-GIF converter are queued next.

1 October 2026

• added

  Metronome — a steady click from 20 to 300 BPM with tap tempo, subdivisions, odd time signatures and an accented downbeat, scheduled against the audio clock so it never drifts.

• added

  Audio Tools category launched — a new home for sound utilities, opening with the Metronome and gathering the existing Text to Speech and Speech to Text tools; tuning, waveforms and trimming are queued next.

• added

  Concrete Mix Ratio Calculator — work out the cement bags, sand, aggregate and water a pour needs from its grade and size, with the dry volume correction applied for you.

• added

  Geotechnical & Concrete category launched — a new hub for concrete and ground-works calculators, starting with the Concrete Mix Ratio Calculator; rebar, footings and soil bearing are queued next.

• added

  Geodetic Distance Calculator — measure the distance and bearing between two latitude and longitude points, with the ellipsoidal and great-circle answers shown side by side.

• added

  GIS & Mapping category launched — a new hub for coordinate and mapping tools, opening with the Geodetic Distance Calculator; map scale, topographic profiles and boundary offsets are queued next.

• added

  Land Area Calculator — work out a plot's area from its corner coordinates or a bearing-and-distance traverse, in acres, hectares, katha and bigha.

• added

  Surveying & Land category launched — a new hub for land measurement tools, starting with the Land Area Calculator; levelling, traverse adjustment and earthwork volumes are queued next.

30 September 2026

• added

  Projectile Motion Calculator — enter a launch speed, an angle and a starting height to get the range, the peak, the time in the air and the impact speed, with the arc drawn to scale.

• added

  Mechanics & Motion category launched — a new hub for force, stress and movement calculators, opening with the Projectile Motion Calculator; beam deflection, gear ratios and spring rates are queued next.

• added

  Flow Rate Calculator — time a known volume into a bucket, or give a pipe bore and a velocity, and get the flow in L/min, GPM, m³/h, CFM and five more units, with the velocity and mass flow in the line.

• added

  Fluids & Thermal — a new category for flow, pressure, pumps, heat transfer and machining speeds, opening with the Flow Rate Calculator.

• added

  Water Tank Capacity Calculator — measure a rectangular, upright or horizontal tank to get its capacity and current contents in litres and gallons, plus how long it takes to fill.

• added

  Building Services category launched — a new hub for plumbing, HVAC and building-systems calculators, starting with the Water Tank Capacity Calculator; septic and duct sizing are queued next.

• added

  FAR Calculator — list a building's floors to get its gross floor area and floor area ratio, and see how much floor space the zoning limit still allows.

• added

  Zoning & Site Planning category launched — a new hub for planning calculators, starting with the FAR Calculator; lot coverage, setbacks and density tools are queued next.

• added

  Resistor Color Code Calculator & Decoder — click the colours on a 4, 5 or 6 band resistor to read its value and tolerance, or type 4.7k or 4k7 to get the bands.

• added

  Electrical Basics category launched — a new hub for electronics and electrical fundamentals, starting with the Resistor Color Code Calculator; Ohm's law and LED resistor tools are queued next.

• added

  Motor Torque Calculator — turn a motor's kW or hp and rpm into shaft torque in N·m or lb·ft, or solve for power or speed, with gearbox output included.

• added

  Electrical Installation & Safety category launched — a new hub for installation calculators, starting with the Motor Torque Calculator; cable tray, clearance and protection tools are queued next.

• added

  3-Phase Power Calculator — convert three-phase kW, kVA or motor horsepower to line current, or amps back to power, with power factor, kVAR and star or delta phase values.

• added

  Power Systems category launched — a new hub for electrical engineering calculators, starting with the 3-Phase Power Calculator; cable, busbar and motor-starter tools are queued next.

• added

  Stair Calculator — lay out a flight from the floor-to-floor height with riser count, tread depth, total run and pitch, checked against IRC, IBC or UK Part K.

• added

  Building Design category launched — a new hub for construction calculators, starting with the Stair Calculator; the Area Calculator is listed here too, with paint, tile and concrete tools queued next.

• added

  Punnett Square Calculator & Generator — enter two parent genotypes such as AaBb to draw the Punnett square for up to four genes, with genotype and phenotype ratios as fractions and percentages.

• added

  Biology & Genetics category launched — a new hub for genetics and biology tools, starting with the Punnett Square Calculator; DNA transcription, a codon table and GC content are queued next.

• added

  Half-Life Calculator — solve radioactive decay for the amount left, the starting amount, the half-life or the time elapsed, with carbon-14 and other isotope presets and a decay curve.

• added

  Physics category launched — a new hub for physics calculators, starting with the Half-Life Calculator; lens, Snell's law, Doppler and orbit calculators are queued next.

• added

  Molar Mass Calculator with Mass Percent — type a formula such as Ca(OH)2 or CuSO4·5H2O to get its molar mass, each element's share by mass, and a grams-to-moles conversion.

• added

  Chemistry category launched — a new hub for chemistry calculators, starting with the Molar Mass Calculator; an equation balancer, molarity and pH tools are queued next.

• added

  GPA Calculator — Weighted & Cumulative — enter letter grades or percentages with credit hours to get your term GPA, a weighted GPA for Honors and AP classes, and your new cumulative GPA.

• added

  Study & Learning category launched — a new hub for student tools, starting with the GPA Calculator; the Pomodoro Timer is listed here too, and flashcards and a citation generator are queued next.

• added

  System of Equations Solver with Steps — type up to 12 linear equations, one per line, and get the exact answer in fractions with every Gauss–Jordan row operation shown, including when there is no solution or infinitely many.

• added

  Advanced Math & Logic category launched — a new hub for algebra, calculus and logic solvers, starting with the System of Equations Solver; the Matrix Calculator and Quadratic Equation Solver are listed here too.

29 September 2026

• added

  Sleep Cycle Calculator — Bedtime & Alarm — enter when you need to wake up, or when the lights go out, and get bedtimes or alarm times that end on a full 90-minute sleep cycle, checked against the hours recommended for your age.

• added

  Sleep & Wellness category launched — a new hub for sleep and recovery tools, starting with the Sleep Cycle Calculator; sleep debt, chronotype and jet lag tools are queued next.

• added

  Macro Calculator — Protein, Fat & Carbs — turn a daily calorie target into grams of protein, fat and carbs, either by body weight or from a Balanced, Zone, High-protein, Low-carb or Keto split, with per-meal amounts and a fibre target.

• added

  Nutrition & Diet category launched — a new hub for macro, protein and meal-planning tools, starting with the Macro Calculator; protein intake, meal planner and recipe scaler tools are queued next.

• added

  Monthly Home Budget Planner — list your monthly expenses as needs, wants or savings, see what share of take-home pay each line takes, and check the plan against the 50/30/20 rule with a suggested fix when a bucket is off target.

• added

  Lifestyle & Budget Planners category launched — a new hub for household money and planning tools, starting with the Monthly Home Budget Planner; commute cost, moving cost and grocery budget planners are queued next.

• added

  Pregnancy Due Date Calculator — enter LMP, conception date, or ultrasound gestational age to get an estimated due date via Naegele’s rule with cycle-length adjustment; includes a seven-milestone pregnancy timeline and three-card summary showing gestational age, days remaining and current trimester.

• added

  Family, Baby & Pets category launched — a new hub for pregnancy, ovulation, baby growth and pet calculators, starting with the Pregnancy Due Date Calculator; ovulation window, baby growth percentile and pet age tools are queued next.

• added

  Calories Burned by Activity — select one of 38 exercises from a MET-value table, enter weight and duration, and get instant calories burned using the standard MET formula; breakdown panel shows the full arithmetic and three context cards give per-minute rate, per-hour rate and WHO intensity category.

• added

  Fitness & Sports category launched — a new hub for exercise and sports calculators starting with the Calories Burned by Activity calculator; running pace, heart rate zones, one-rep max and VO₂ max estimators are queued next.

28 September 2026

• added

  Calorie & TDEE Calculator — enter age, weight, height and activity level to get your BMR via the Mifflin-St Jeor equation and your TDEE; a goal table shows daily targets from extreme cut to bulk, and a macro panel converts the 30/30/40 protein/fat/carb maintenance split to grams.

• added

  Health & Body category launched — a new hub for health and body calculators starting with the Calorie & TDEE Calculator; water intake, ideal weight, body fat percentage and BMR calculators are queued next.

27 September 2026

• added

  Probability Calculator — enter any favourable outcome count and sample space size to get P(E) as a reduced fraction and a decimal, the complement P(E′), odds ratio, log-odds, expected value, variance and standard deviation; a visual probability bar and binomial trial stats panel complete the output.

• added

  Probability & Distributions category launched — a new hub for probability and statistics tools starting with the Probability Calculator; normal distribution, binomial and Poisson calculators are queued next.

26 September 2026

• added

  Bar Chart Generator — paste comma-separated labels and values, pick a colour scheme and orientation (vertical or horizontal), then export the chart as an SVG file or copy the markup; a data table with % bars and CSV download are included. New Charts & Diagrams category launched.

• added

  Charts & Diagrams category launched — a new hub for browser-native data visualisation tools starting with the Bar Chart Generator; pie charts, line graphs, heatmaps and Gantt charts are queued next.

• added

  Data Normalizer — paste any numeric dataset and rescale it with Min-Max Scaling (any target range) or Z-Score Standardisation; value-by-value breakdown table with visual bars, Copy CSV and Download CSV. New ML & Data Prep category launched.

• added

  ML & Data Prep category launched — a new hub for machine learning data-preparation tools starting with the Data Normalizer; anonymisation, one-hot encoding and model-accuracy calculators are queued next.

• added

  Mean Calculator — paste any dataset to get mean, median, mode, range, variance, standard deviation, quartiles, IQR, coefficient of variation and Pearson skewness; population and sample modes; inline skew notice when mean and median diverge. New Statistics category launched.

• added

  Statistics category launched — a new hub for descriptive and inferential statistics tools starting with the Mean / Descriptive Statistics Calculator; median, standard deviation, z-score and correlation tools are queued next.

• added

  Discount & Sale Price Calculator — enter an original price and one or two stacked discounts to get the final price, total saving and true effective rate; includes a step-by-step breakdown table showing each deduction. New Business & Sales category launched.

• added

  Business & Sales category launched — a new hub for retail and commercial calculators starting with the Discount Calculator; VAT, profit margin and break-even tools are queued next.

• added

  Unit Converter — convert length, weight, volume and temperature across 38 metric and imperial units; domain tabs, an instant Swap button, and a full reference table that shows every unit at once.

• added

  Unit Converters category launched — a new hub for measurement conversion tools starting with the multi-domain Unit Converter; length, weight, volume and temperature specialists are queued next.

• added

  Compound Interest Calculator — enter a principal, annual rate, time period and optional monthly contribution; choose from 8 compounding frequencies; see the effective annual rate, total interest earned, and a year-by-year growth table. New Finance & Loans category launched.

• added

  Finance & Loans category launched — a new dedicated hub for financial calculators starting with the Compound Interest Calculator; mortgage, inflation, retirement and debt-payoff tools are queued next.

25 September 2026

• added

  CPC (Cost Per Click) Calculator — solve for CPC, total clicks or ad spend from the other two, set a target CPC to see the exact click or spend gap, and compare your rate against Google Search, Meta, LinkedIn, YouTube and Google Shopping benchmarks.

23 September 2026

• added

  Event Schema JSON-LD Generator — build a schema.org Event block with start/end dates, venue, organiser and ticket offers; supports in-person, online and hybrid modes, all 21 event subtypes, and the EventCancelled/Postponed status values Google uses for rich result updates.

• added

  Instagram Caption Generator — type your topic, pick a tone and niche, and get a full caption with opening hook, body copy, CTA and 25 hashtags; five tones and eight niches, with a Regenerate button that cycles through different copy variations.

• added

  Open Graph Tag Generator — fill in a form and get the complete og:title, og:description, og:image and Twitter/X Card meta tag block, ready to paste into your page head; supports article, product, website and video types with character-count badges on title and description.

• added

  Liquidity Pool Share Calculator — enter your pool reserves and Token A deposit to get the required Token B amount and your resulting LP share percentage; supports 50/50 and 80/20 weighted pools with an optional USD value readout.

• added

  Bech32 / Bech32m Address Encoder — encode any HRP and hex payload to a Bech32 or Bech32m address, or decode one back to its parts; distinguishes the Bech32 (v0) and Bech32m (v1+, Taproot) checksum constants, so a bc1p address no longer looks like a typo.

22 September 2026

• added

  EVM Chain ID Reference — searchable table of 59 networks covering Ethereum, all major L2s, sidechains, active testnets and deprecated testnets; click any chain ID, currency symbol or RPC URL to copy it instantly.

• added

  Wallet Address QR Generator — paste any Ethereum, Bitcoin or Solana address and get a BIP-21/EIP-681 payment QR code instantly; optional amount and label fields are URI-encoded, chain is auto-detected, and the result downloads as a PNG at 200–512 px.

• added

  XSS Input Sanitizer — paste any HTML fragment and get back a clean version with script tags, iframe embeds, on* handlers, javascript: hrefs and unsafe style attributes stripped; the 'What Was Removed' tab lists every blocked tag and stripped attribute by name.

20 September 2026

• added

  JSON Minifier & Compressor — paste any JSON and get a single dense line back; three toggles handle comment stripping, key sorting and non-ASCII escaping, with a live byte-savings stat bar showing the exact reduction.

19 September 2026

• added

  Image Border & Frame Generator — wrap a photo in a solid band, a double rule, an inset hairline, a Polaroid lip or a floating shadow, then download it at full resolution or copy the matching CSS.

16 September 2026

• added

  Bitwise Operations Visualizer — two operands on clickable bit grids, with AND, OR, XOR, NOT and all three shifts resolved column by column at 8, 16 or 32-bit width. Fields read decimal, 0x hex and 0b binary; flipping a cell rewrites the field in the notation it already held.

• added

  Bit Manipulation Visualizer — step forward and backward through set, clear, toggle and test at any bit index, plus popcount, CLZ, CTZ, the power-of-two check and x & -x. Frames are pre-computed, so stepping back shows the real earlier state rather than an inverted guess.

• added

  Passive to Active Voice Converter — detects passive-voice constructions in your text and rewrites them in active voice when the actor is named; agentless passives are flagged with a one-click hint to supply the missing subject.

13 September 2026

• added

  Image Annotation & Markup Tool — upload or paste a screenshot, then annotate it with arrows, shapes, freehand drawing, highlights and text labels. Undo/redo, clipboard paste (Ctrl+V), PNG/JPEG download — all client-side.

12 September 2026

• added

  Common Typo Fixer — paste any draft and 500+ bundled misspellings are corrected client-side, with a diff view showing each typo struck through and its replacement highlighted in green.

9 September 2026

• added

  Text Truncator & Summarizer — truncate by word or character limit with a custom suffix, or extract the top N sentences by word-frequency relevance, entirely client-side.

7 September 2026

• added

  DSU / Union-Find Visualizer — step through operation sequences or issue live union/find commands on a colour-coded forest with path compression and union-by-rank.

5 September 2026

• added

  Free Fire Style Name Generator — Name Customizer modal. Each variant card now has a Pencil/Edit button that opens a bottom-sheet drawer pre-loaded with that variant's styled name. Inside the sheet: live editable input with FF 12-char limit counter, 4-tab symbol palette (Emblems / Borders / Stars & Shapes / Space & Invisible, 20+ symbols per tab), cursor-position insert (tapping a symbol inserts at the caret), Prefix/Suffix quick-insert buttons for 6 common symbols, Reset to Original, Copy Customized Name button with Copied badge. Body scroll is locked while the sheet is open. Bottom-sheet on mobile, centred modal on sm+. Dismiss by tapping backdrop or pressing Escape.

• changed

  Free Fire Style Name Generator — mobile-first refactor. Changes: (1) Sticky input bar stays accessible while scrolling the variants list on mobile. (2) FF 12-character limit counter with green/amber/red status indicator replaces the previous 30-char counter. (3) Symbol palette now uses only FF-compatible Unicode glyphs — colorful emojis (🔥 👑 🎯 etc.) removed as they render as boxes in-game; replaced with ☠ ⚔ ⚡ ⚜ ♚ ✿ ✦ ☣︎ 𖣘 ⚠. (4) Symbol tap now appends to the name input instead of copying to clipboard. (5) Font category filter tabs (All / Bold & Gothic / Serif & Cursive / Wide / Symbol Frames). (6) Single-column card grid on mobile, 2-column on sm+. (7) Copy button enlarged to 44px min-height for reliable touch targets. (8) Amber border on any variant exceeding 12 characters. (9) Lead sample changed to PhantomKing (11 chars, fits FF limit). Data engine: LEAD_INDEX updated.

• added

  Free Fire Style Name Generator — New Gaming Tools category. Type any nickname and instantly see 72 styled variants across 8 Unicode font styles (Bold, Mono, Double/Blackboard Bold, Cursive, Italic/Fraktur, Circle, Wide, Serif Bold) and 9 border frames (꧁༺…༻꧂, 亗…亗, ☠︎…☠︎, 『…』, ★…★ and more). Every variant has a one-click Copy button. Includes a 35-symbol Quick-Add palette covering gaming emblems, border characters and 5 invisible space characters (Zero-Width Space, Hangul Filler, etc.) used for blank display names. Input capped at 30 characters, pre-populated with ShadowStrike on load. Engine extension: added gaming-name SampleKind (4 entries) to src/lib/data-generator.ts.

• changed

  Instant Value on Load — UX audit across all 232 tools. 25 tools that opened with a blank input now pre-populate on arrival using the data engine (firstSample / firstTuple). Affected tools: JSON Formatter, Base64 Encoder, Word Counter, Case Converter, Text Reverser, Text to Binary, Text to Hex, Text to Base64, Paragraph Formatter, Text Sorter, Text Diff Checker, Find and Replace, Text to Slug, Text Cleaner, URL Encode, Whitespace Remover, Line Counter, Keyword Density, Morse Code, Text Separator, Number to Words, Roman Numerals, Temperature Converter, Code Formatter, GCD/LCM Extended. All seeds draw from src/lib/data-generator — no hardcoded literals. Exceptions documented in .kiro/steering/instant-value-ux.md.

• added

  Steering rule: instant-value-ux.md added to .kiro/steering/ (auto-included). Documents the Instant Value on Load requirement, correct firstSample/firstTuple patterns, all documented exceptions, and a SampleKind lookup table for future tool builders.

4 September 2026

• changed

  Lorem Ipsum Generator (all 21 pages) — dummy text now pre-loads on page arrival. All 21 Lorem Ipsum pages (the main multi-language generator and all 20 language-specific tools) show 2 paragraphs of placeholder text immediately on load, with no Generate click required. Controls remain fully functional for regeneration.

• added

  English Lorem Ipsum Generator — Standalone page for the classic Latin pool. Paragraphs, sentences, words, and bullet list modes with the canonical opener toggle.

• added

  Bangla Lorem Ipsum Generator — Standalone Bengali placeholder text page, locked to the Bengali script pool. RTL-free, matra-accurate filler for Bangla layout testing.

• added

  Hindi Lorem Ipsum Generator — Standalone Devanagari placeholder text page with shirorekha-accurate filler for Hindi layout and typography testing.

• added

  Arabic Lorem Ipsum Generator — Standalone RTL Arabic placeholder text page. Output textarea sets dir="rtl" automatically; all four output modes supported.

• added

  Spanish Lorem Ipsum Generator — Standalone Spanish placeholder text page with accented-character pool for layout testing in the world's second most-spoken language.

• added

  French Lorem Ipsum Generator — Standalone French placeholder text page with full Latin Extended-A character coverage for French-language design mockups.

• added

  German Lorem Ipsum Generator — Standalone German placeholder text page using a pool that reflects real German word-length distribution for compound-word overflow testing.

• added

  Dutch Lorem Ipsum Generator — Standalone Dutch placeholder text page for Western European multilingual layout stress tests.

• added

  Portuguese Lorem Ipsum Generator — Standalone Portuguese placeholder text page covering shared pt-BR and pt-PT core vocabulary with tilde characters.

• added

  Italian Lorem Ipsum Generator — Standalone Italian placeholder text page with vowel-final word rhythm for editorial and brand design mockups.

• added

  Russian Lorem Ipsum Generator — Standalone Russian placeholder text page using Cyrillic filler that reflects real Russian optical weight and glyph density.

• added

  Chinese Lorem Ipsum Generator — Standalone Simplified Chinese placeholder text page for CJK glyph-density and column-width layout testing.

• added

  Japanese Lorem Ipsum Generator — Standalone Japanese placeholder text page mixing hiragana, katakana and kanji pool tokens for Japanese-language design validation.

• added

  Korean Lorem Ipsum Generator — Standalone Hangul placeholder text page with square-em-density filler for Korean-language layout testing.

• added

  Turkish Lorem Ipsum Generator — Standalone Turkish placeholder text page with agglutinative token distribution for Turkish overflow testing.

• added

  Persian Lorem Ipsum Generator — Standalone RTL Persian (Farsi) placeholder text page. Output sets dir="rtl" automatically and uses a genuine Farsi word pool distinct from Arabic.

• added

  Swahili Lorem Ipsum Generator — Standalone Kiswahili placeholder text page. Diacritic-free Latin script, no font-coverage risk, suited for East African market mobile-first layouts.

• added

  Ukrainian Lorem Ipsum Generator — Standalone Ukrainian placeholder text page using a Cyrillic pool that includes the four Ukrainian-specific characters absent from Russian fonts.

• added

  Polish Lorem Ipsum Generator — Standalone Polish placeholder text page with high diacritic frequency (ą, ć, ę, ł, ń, ó, ś, ź, ż) for Latin Extended-A font-coverage testing.

• added

  Indonesian Lorem Ipsum Generator — Standalone Bahasa Indonesia placeholder text page. Diacritic-free Latin script for the world's fourth most-populous digital market.

3 September 2026

• added

  PDF Pages to Images Exporter — Convert every page of a PDF to PNG or JPEG at 72, 150 or 300 dpi. Download pages individually or as a single ZIP. Rendered in your browser with PDF.js — nothing is uploaded.

• added

  Daily Standup Notes Template — Fill in Yesterday, Today and Blockers, copy as plain text or Markdown, and browse a history of your last 7 standups. Saves to your browser — nothing sent to a server.

1 September 2026

• added

  Timesheet / Time Card Calculator — Enter clock-in, clock-out and break minutes for up to 14 shifts. Daily and weekly overtime calculated automatically, with optional gross pay at 1.5× for overtime hours.

• added

  Fibonacci Sequence Generator — Generate up to 200 Fibonacci terms with exact BigInt precision, a golden-ratio convergence panel, a visual bar chart for the first 30 terms, and copy as CSV or newline-separated text.

28 August 2026

• added

  Avro Phonetic Bangla Typing Tool — Type Bangla with an English keyboard using the Avro Phonetic layout, copy the result, and browse a cheat sheet plus 320+ common Bangla words. No input software to install.

• added

  Logarithm Calculator — Compute a logarithm in any base (the base field even takes e), or solve backwards for the base or the argument, with the change-of-base arithmetic and the same log restated in base 10, e and 2.

• added

  CPM (Cost Per Mille) Calculator — Solve for CPM, impressions or ad spend from the other two, see how far a buy is from a target CPM in impressions or dollars, and check it against common channel benchmark ranges.

• added

  Article & Blog Post Schema Generator — Build Article, BlogPosting or NewsArticle JSON-LD from ordinary fields, with author and publisher nesting done for you, absolute-URL checks, and a warning when a headline runs past Google's 110-character limit.

• added

  Landing Page Copy Scorer — Score pasted landing-page copy on a transparent 100-point rubric across six measured dimensions: readability, sentence length, call to action, customer focus, specificity and clarity, each shown with the numbers behind it.

• added

  Keyword Permutation & Long-Tail Generator — Combine two or more word lists into every long-tail phrase that takes one term from each, with options for the join character, list-order permutation, and Google Ads phrase or exact match wrapping.

• added

  Token Supply & Decimals Calculator — Convert an ERC-20 amount to the base-unit integer a contract call takes and back, and measure any holding against total supply as a percentage, in basis points, and as the raw totalSupply() value. BigInt-exact.

• added

  Base58 / Base58Check Encoder — Encode bytes or text to Base58 and Base58Check, or decode a Base58 string back to hex with a full checksum check. Handles the leading-zero rule and runs entirely in your browser.

23 August 2026

• added

  Solidity ABI Encoder / Decoder — Encode a Solidity function call to calldata or decode raw calldata back to typed values. Supports uint/int, bool, address, bytesN, bytes and string. A one-click Decode button verifies the round-trip instantly.

• added

  Keystore JSON Inspector — See which account a wallet keystore holds and how much work one password guess costs an attacker, read entirely from the file's plaintext metadata. There is no password field, and nothing is ever decrypted.

• added

  Suspicious URL Analyzer — Read a link before you click it: it decodes punycode, catches the @ trick that beats checking the address bar, and flags single words that mix two alphabets, without ever fetching the page.

• added

  CSR Generator — Generate a PKCS#10 Certificate Signing Request and matching private key entirely in your browser. Supports RSA 2048/4096 and EC P-256/P-384. Nothing is uploaded.

22 August 2026

• added

  CSRF Token Generator — Pick between synchronizer, double-submit and signed double-submit protection, then copy the exact Set-Cookie line, hidden input, meta tag and request header that pattern needs. The signed variant adds a real HMAC-SHA-256 MAC via WebCrypto, and the missing HttpOnly flag on double-submit is explained inline rather than left as a surprise.

• added

  JavaScript Minifier — Strip comments, collapse whitespace, shorten booleans and drop console calls from any script. Single-pass scanner keeps strings, template literals and regex literals intact; download as .min.js.

19 August 2026

• added

  Image Pixelator — Apply a block-averaging mosaic to any photo in three styles: square blocks, horizontal scanline bars, or circular halftone dots. Block size from 2 to 64 px; exports at full native resolution.

• added

  Speech to Text — Dictate into a live transcript using your microphone, with 20-language support, punctuation chips, inline editing mid-session, and copy or download when you are done. Runs in your browser; audio goes to your browser vendor's recognition service.

• added

  Sparse Table (RMQ) Builder — Build the full 2D sparse-table precomputation, run O(1) range-minimum queries live in the browser, and copy a ready-to-paste C++ template sized to your array.

17 August 2026

• added

  PDF Password Remover — Remove the open password from a protected PDF and download the unlocked file, decrypted entirely in your browser with pdf-lib. Works on owner-restricted PDFs too.

• added

  Daily Planner — Build a time-blocked schedule for any day, tick blocks as you go, sort by time, copy as plain text or download as Markdown. Saves per date in your browser, no account needed.

• added

  Countdown Timer & Days Until — Live days, hours, minutes and seconds to any target date, with five presets, optional time, a total-hours summary bar, and elapsed-time mode for past dates.

• added

  Prime Number Checker — Test whether any positive integer is prime, with the complete factorisation when it is not, a session history, and the real reason 1 is excluded from the primes.

16 August 2026

• added

  Trigonometric Function Calculator — All six functions in degrees, radians or gradians, with exact surd values on the special angles, a unit circle, and an honest undefined where tangent blows up instead of the huge number browsers report.

• added

  Customer Lifetime Value Calculator — Work out CLV three different ways from one set of inputs, with the LTV to CAC ratio and the month acquisition cost is repaid, and a clear answer for the zero-churn case that breaks the usual formula.

• added

  Local Business Schema Generator — Build LocalBusiness JSON-LD with opening hours modelled properly, so split shifts, half-day Fridays and round-the-clock trading all come out correct instead of flattened into one line.

• added

  YouTube Thumbnail Downloader — Paste any YouTube link and save every thumbnail size the video publishes, as JPG or the roughly half-the-weight WebP, with sizes that were never generated flagged rather than shown broken.

• added

  Hreflang Tag Generator & Validator — Build the tags for every language version of a page as HTML, an HTTP header or sitemap XML, and catch invalid codes such as en-UK before they reach production.

• added

  Token Vesting Schedule Planner — Turn an allocation, cliff and vesting period into a dated unlock table with a cumulative curve and CSV export, covering both of the cliff conventions that term sheets use.

• added

  RLP Encoder / Decoder — Take a raw Ethereum RLP payload apart into its fields and byte lengths, or serialise a nested structure back into the bytes a client would send.

• added

  Merkle Tree & Proof Builder — Paste an allowlist and get the Keccak-256 Merkle root plus a copy-ready inclusion proof for any address, using the sorted-pair hashing OpenZeppelin's MerkleProof expects.

15 August 2026

• added

  Bitcoin Address Validator — Check any Bitcoin address for a valid checksum and see its type, network and witness program, covering legacy, SegWit and Taproot entirely offline.

14 August 2026

• added

  Free eBooks — A new category of downloadable PDF guides, free and with no email or signup, starting with a 500-verb spoken-English book for Bangla speakers.

• added

  ৫০০ ইংরেজি Verb (Bangla) — 500 everyday English verbs with Bangla pronunciation, meaning and an example sentence each, across 16 chapters and 108 pages.

• added

  Email Address Validator — Check one address or a whole list for syntax errors, mistyped providers, disposable domains and role accounts, with nothing uploaded.

• added

  SSL Certificate Decoder — Paste a PEM certificate to read its subject, issuer, expiry, alternative names, key algorithm and fingerprints, decoded entirely in your browser.

• added

  UUID v5 Generator — Build deterministic RFC 4122 UUIDs from a namespace and a name, so the same inputs always produce the same ID on any machine.

• added

  JSON Schema Validator — Check a document against a draft-07 schema and get every failure with its exact path, plus an explicit list of any keywords the validator did not check.

• added

  Image Metadata Viewer — See the EXIF inside a photo: camera, lens, shutter, ISO, capture date and GPS coordinates, read in your browser without the file being uploaded.

• added

  Writing Style & Passive Voice Checker — Highlights passive voice, hedges, -ly adverbs, nominalisations, filler phrases and over-long sentences in your draft, each colour switchable on its own.

• added

  Sorting Algorithm Visualizer — Watch bubble, selection, insertion, merge, quick and heap sort run on the same array one comparison at a time, with separate comparison and write counters.

• added

  PDF Watermark Adder — Stamp text across a PDF at any size, angle, colour and opacity, in one of nine positions or tiled over the whole page, without the file leaving your browser.

• added

  Online Notepad — A distraction-free note taker that keeps up to 20 notes in your browser, autosaves as you type, counts words live, and downloads any note as Markdown.

• added

  Date Add / Subtract Calculator — Move any date forward or backward by years, months, weeks, days, hours and minutes, with month-end clamping and the resulting weekday, ISO week and ISO 8601 stamp.

• added

  Dice Roller — Roll d4 through d100 with standard dice notation like 2d6+3, a running history, and cryptographically random results.

• added

  Rounding & Significant Figures — Round any number to N decimal places or N significant figures under 4 rounding modes, with exact decimal math and no float errors.

• added

  CTR Calculator — Calculate click-through rate from clicks and impressions, with an optional target-CTR gap and channel benchmarks, entirely offline.

• added

  Breadcrumb Schema Generator — Build a schema.org BreadcrumbList JSON-LD block from an ordered page trail, entirely offline.

• added

  HTML Email Signature Generator — Build a cross-client-safe HTML email signature with a live preview and one-click copy, entirely offline.

• added

  robots.txt Generator — Build a valid robots.txt file from Allow/Disallow rule groups, crawl-delay and sitemap URLs, entirely offline.

• added

  Staking Rewards Calculator — Project staked crypto growth over any period at a given APR, with simple or compounding payout, entirely offline.

• added

  Satoshi / BTC Unit Converter — Convert between Satoshi, Bit, mBTC and BTC with BigInt precision, entirely offline.

• added

  ENS Namehash Calculator — Compute the EIP-137 namehash for any .eth domain and see every recursive Keccak-256 hashing step, label by label. Runs entirely offline.

13 August 2026

• added

  Ethereum Address Validator — Check any Ethereum address for EIP-55 checksum validity, identify well-known contracts, and copy the checksummed, lowercase, or uppercase form. Runs offline with Keccak-256.

• added

  otpauth:// QR Code Builder — Build the standard TOTP or HOTP URI and render it as a scannable QR code for any authenticator app. Supports SHA-1/256/512, 6–8 digit codes, and 30/60/90s periods. Nothing leaves the browser.

• added

  ECDSA / ECDH Key Pair Generator — Generate elliptic-curve key pairs on P-256, P-384, or P-521 in PEM or JWK format using WebCrypto. Private key blurred by default. Copy works even while the key is hidden. Nothing leaves the browser.

• added

  Weak Password Pattern Checker — Run any password through 10 structural weakness tests (length, common words, keyboard walks, l33t-speak, repeated chars, year patterns and more). Every flag explains exactly why it fired. Nothing is sent anywhere.

12 August 2026

• added

  JSON Path Finder & Query Tool — Pull any value out of a JSON document with a JSONPath expression, including wildcards, recursive descent and filters like [?(@.days > 5)]. Or click a node in the document tree and get its exact path back.

• added

  Image Watermark Tool — Stamp your own text across a photo before you publish it. Nine corner and edge positions or a repeating tile, with live control over size, opacity, rotation and colour. The photo never leaves your browser.

• added

  Text Similarity & Overlap Comparator — Paste two documents and see how much they really share: cosine, Jaccard and character edit-distance scores, the words unique to each side, and every phrase repeated verbatim in both.

• added

  Column / Fixed-Width Text Formatter — Align every line of a text block to an exact column width with left, right, or centre padding. Add optional border strings for code comment blocks or README tables. Six width presets from 40 to 120 characters.

• added

  Binary Search Step Visualizer — Step through binary search on your own sorted array, one probe at a time. Highlights lo, hi and mid at each step with plain-English explanations. Play, pause or step manually.

• added

  PDF Compressor — Strip metadata and pack object streams to reduce file size. Saves 10–40% on digitally-created PDFs. Runs entirely in your browser, nothing uploaded.

• added

  Goal Tracker with Milestones — Set goals with deadlines and priority levels, break each one into up to 20 milestones, and track progress as a percentage bar. Everything saves to your browser automatically.

• added

  Time Zone Converter — Convert any date and time across 40 IANA zones simultaneously. DST offsets and abbreviations update automatically. Copy any result with one click. Runs entirely in your browser.

11 August 2026

• added

  Random Number Generator — Draw one number or a thousand from any range you set, with an option for no repeats. Every draw comes from your browser's cryptographic random source rather than Math.random(), and the modulo skew that makes low numbers slightly more likely is rejected instead of ignored.

• added

  3D Volume Calculator — Work out the volume and surface area of a cube, box, sphere, cylinder, cone or square pyramid, and read the capacity straight off in litres, US gallons and cubic metres. Pick the unit your dimensions are in and the conversion follows.

• added

  UTM Parameter Builder — Tag a link with utm_source, utm_medium, utm_campaign and the rest, with casing and spaces normalised so the same campaign never splits into two rows in your analytics. Parse URL runs it backwards, pulling the parameters off a finished link and back into the form.

• added

  Product Schema JSON-LD Generator — Build a schema.org Product block from a product's name, brand, SKU, price, availability and star rating, then copy it as a script tag or as bare JSON for a CMS field. Empty fields are left out so the markup stays valid.

• added

  Email Subject Line Analyzer — Score an email subject line across 6 signals (length, urgency, direct address, numbers, question format, spam risk) with every point explained on screen. Runs entirely in your browser.

10 August 2026

• added

  Meta Tag Generator — Generate the full set of HTML meta tags (title, description, robots, canonical, Open Graph, Twitter Card) in one form. Copy and paste into your page head.

• added

  APY/APR Converter — Convert between Annual Percentage Yield and Annual Percentage Rate across 8 compounding frequencies, with the formula shown and a full comparison table.

• added

  EIP-55 Checksum Tool — Apply or validate the EIP-55 mixed-case checksum on any Ethereum address, with instant copy for the checksummed, lowercase, and uppercase forms.

• added

  ETH Gas Fee Calculator (EIP-1559) — Calculate transaction fees in ETH and USD using the EIP-1559 base-fee-plus-tip model or legacy gas price, with six preset transaction types and BigInt-exact Wei arithmetic.

• added

  Wei / Gwei / ETH Converter — Convert between all 10 Ethereum denominations using BigInt arithmetic for exact results at the Wei level. Copy any value with one click.

• added

  Credit Card Number Validator — Validate any card number with the Luhn algorithm, detect the card network from the prefix, and see the IIN, CVC length, and redacted display format. Runs entirely in your browser.

• added

  RSA Key Pair Generator — Generate 2048, 3072, or 4096-bit RSA key pairs for encryption (OAEP) or signing (PSS) in standard PEM format, entirely in your browser using WebCrypto.

• added

  Cryptographic Secret Key Generator — Generate 128 to 512-bit keys in hex, Base64, Base64URL, or Base58 using crypto.getRandomValues. Batch up to 20 at once. No server, no log.

• added

  Date Difference Calculator — Get the exact calendar difference between two dates in years, months and days, plus total days, weeks, hours and minutes, computed entirely in your browser.

• added

  Date & Time Tools is a new category, opening with the Date Difference Calculator. Time zone conversion, working-day counting and countdown timers are queued behind it.

• added

  2×2 / 3×3 Matrix Calculator — Add, subtract, multiply, transpose, and find the determinant or inverse of a 2x2 or 3x3 matrix, entirely in your browser.

• added

  Number & Base Tools is a new category, opening with the 2×2 / 3×3 Matrix Calculator. Factorial, Fibonacci and base-conversion tools are queued behind it.

9 August 2026

• added

  A/B Test Significance Calculator — Run a two-proportion z-test on your A/B test results and get a real p-value, computed entirely in your browser.

• added

  Marketing & Ad Calculators is a new category, opening with the A/B Test Significance Calculator. UTM building and CPC/CPA/CLV calculators are queued behind it.

• added

  FAQ Schema JSON-LD Generator — Build a schema.org FAQPage JSON-LD block from your own questions and answers, ready to paste into your page, entirely in your browser.

• added

  Schema & Structured Data is a new category, opening with the FAQ Schema JSON-LD Generator. Article, product, event and recipe schema generators are queued behind it.

• added

  Headline / Title Analyzer & Scorer — Score a headline against a fully transparent 100-point rubric, with every point explained in an on-screen breakdown, entirely in your browser.

• added

  Content & Social Tools is a new category, opening with the Headline / Title Analyzer & Scorer. Email subject line testing and social caption generators are queued behind it.

• added

  Google SERP Preview Tool — See how a title and description will render in Google search results, truncated by real pixel width instead of a character count, entirely in your browser.

• added

  On-Page SEO is a new category, opening with the Google SERP Preview Tool. Meta tag, robots.txt and XML sitemap generators are queued behind it.

• added

  Impermanent Loss Calculator — See what a 50/50 liquidity pool costs versus simply holding, in both percent and dollars, from two prices and a deposit amount, entirely in your browser.

• added

  DeFi & Tokenomics is a new category, opening with the Impermanent Loss Calculator. Staking APY, vesting schedules and liquidity pool tools are queued behind it.

• added

  CSS Minifier & Compressor — Strip comments, indentation and redundant semicolons from a stylesheet, shorten hex colours and zero units, and see the byte saving as you type. Strings, data URIs and calc() are left untouched.

• added

  Sieve of Eratosthenes Visualizer — Step through the classic prime-finding algorithm on an animated colour-coded grid. Enter any limit up to 500, use Step or Play, and copy the resulting prime list.

• added

  PDF Page Rotator — Rotate all pages or a specific range in a PDF by 90°, 180°, or 270°, entirely in your browser with no upload required.

• added

  To-Do List Manager — Add tasks with High / Medium / Low priority, filter by status, and track completion progress with a live bar. Everything saves to your browser automatically, no account needed.

• added

  Area Calculator — Calculates area (and perimeter where deterministic) for five shapes — rectangle, circle, triangle, trapezoid, and parallelogram — with a live labelled diagram and the formula displayed alongside every result.

8 August 2026

• added

  Keccak-256 Hash Generator — Hash text or raw hex bytes with the Ethereum variant of Keccak-256 (not NIST SHA-3), entirely in your browser, built on the same verified implementation that powers the Function Selector Calculator.

• added

  Blockchain Encoding is a new category, opening with the Keccak-256 Hash Generator. RLP encoding and Base58/Bech32 address tools are queued behind it.

• added

  Function Selector (4-byte) Calculator — Compute the Ethereum ABI function selector from a Solidity signature using a from-scratch Keccak-256 implementation, entirely in your browser, with automatic parameter-name stripping.

• added

  Smart Contracts & EVM is a new category, opening with the Function Selector (4-byte) Calculator. ABI encoding and gas estimation tools are queued behind it.

• added

  BIP-39 Mnemonic Phrase Generator — Generate a spec-compliant 12-to-24-word seed phrase from secure entropy entirely in your browser, with the words blurred by default and a copy option that works without ever revealing them on screen.

• added

  Crypto Wallets & Keys is a new category, opening with the BIP-39 Mnemonic Phrase Generator. HD wallet derivation and address validators are queued behind it.

• added

  TOTP / 2FA Code Generator — Compute RFC 6238 time-based one-time codes from a Base32 secret entirely in your browser, with algorithm, digit and refresh-period controls, a live countdown, and previous/next codes for clock-skew checks.

• added

  Auth, Privacy & Validation is a new category, opening with the TOTP / 2FA Code Generator. A cookie inspector, an XSS sanitizer, and Luhn card and email validators are queued behind it.

• added

  AES-256 File Encryptor / Decryptor — Encrypt or decrypt any file with a passphrase using AES-GCM and PBKDF2 key derivation, entirely in your browser, with drag-and-drop and automatic mode detection for already-encrypted files.

• added

  Encryption & Keys is a new category, opening with the AES-256 File Encryptor / Decryptor. RSA and ECDSA key pair generators, a CSR builder and a certificate decoder are queued behind it.

• added

  Secure PIN Generator — Generate cryptographically secure PINs in numeric, alphanumeric or hex mode, choose a length from 4 to 16 characters, batch up to 20 PINs at once, and group digits with dashes for easier transcription.

• added

  ASCII Table — Look up any of the 256 ASCII and Latin-1 characters by decimal, hex, octal or binary, with names, control-code abbreviations and one-click copy.

• added

  Image Brightness & Contrast Editor — Correct an under- or over-exposed photo with brightness, contrast and saturation sliders, then either download the full-resolution result or copy the equivalent CSS filter declaration for use in a stylesheet.

7 August 2026

• added

  Keyword & Phrase Extractor Tool — Pull ranked single words or 2- and 3-word phrases out of any pasted text, with adjustable word-length and repeat-count filters and a spreadsheet-ready copy list.

• added

  Sentence Splitter & Extractor — Split any paragraph into individual sentences, filter by word count or keyword, and export as a line list, numbered list, JSON array, or CSV column.

• added

  Extended GCD & Bezout Calculator — Compute gcd(a,b), lcm(a,b), Bezout coefficients, modular inverse, and the full Euclidean step trace for any two integers up to 10¹⁸.

• added

  PDF Page Splitter — Extract a page range, break a PDF into fixed chunks, or save every page as its own file. Runs entirely in your browser with no upload.

• added

  Text to Speech Reader — Convert typed or pasted text into spoken audio using your browser's built-in voices, with adjustable rate, pitch, volume, and live word highlighting.

• added

  Writing & Editing is a new category, opening with Text to Speech Reader. More drafting, style-checking and readability tools are queued behind it.

• added

  Habit Tracker with Streaks — Track daily habits on a GitHub-style 84-day grid with current and longest streaks, completion rate, and color coding.

• added

  Pythagorean Theorem Calculator — Solve for a missing side or verify a right triangle from any two sides, with angles, area, perimeter and a squares-on-each-side diagram.

• added

  API Key Generator — Generate random API-style key strings for tests, mock UIs and seed data with a chosen prefix, encoding and length.

• added

  HTTP Status Code Reference — searchable, expandable reference for all 57 standard codes (1xx–5xx) with plain-English explanations, cacheable tags, and RFC sourcing. All data is bundled locally.

• added

  Image Cropper — drag-to-select crop with 8 resize handles, rule-of-thirds grid, 7 aspect-ratio presets (Free / 1:1 / 4:3 / 3:2 / 16:9 / 2:3 / 9:16), JPEG/PNG/WebP output and adjustable quality.

• added

  Text to ASCII Art Generator — convert any text into multi-line ASCII art using five bundled fonts (Standard, Block, Banner, Slant, Mini), with 80-char input cap, auto-wrap at 20 chars, and one-click copy.

• added

  DP Table Builder — Animate the bottom-up fill of Fibonacci, LCS, Knapsack, Coin Change and Edit Distance tables with heat-map shading and TSV export.

• added

  PDF Merger — Combine multiple PDFs into one in your browser: drag to reorder, skip password-protected files automatically, download a datestamped merged PDF.

• added

  Focus Timer — Set a 1–240 minute deep-work countdown with six quick presets, ±5 min steppers, a three-tone completion beep, and a daily sessions-completed stat.

• added

  Scientific Calculator with Memory — Solve trig, log, power and factorial expressions with a full keypad, DEG/RAD modes, memory keys, and calculation history.

• added

  Password Entropy Calculator — Calculate entropy in bits from a real password or a length-and-character-set policy, then compare crack times across four attack speeds.

6 August 2026

• added

  CSS Formatter & Beautifier — beautify minified CSS with 2-space, 4-space or tab indent, or minify it back to a single line. Preserves string values and data URIs. Shows lines, output chars and bytes saved.

• added

  Image Flip & Rotate Tool — rotate any JPEG, PNG or WebP by 90°, 180° or 270°, flip horizontally or vertically, or combine both. Instant preview with show-original toggle. All processing runs locally in the browser.

• added

  Text Statistics Dashboard — 17 metrics in one paste: character/word/sentence counts, unique words, averages, Flesch readability, reading and speaking time, top keywords with bar chart, and top 8 letters by frequency.

• added

  PDF to Text Extractor — extracts readable text from PDF files entirely in the browser by parsing BT/ET content streams. Shows Words, Lines and Characters stats. A compression caveat banner explains when output is partial.

• added

  Eisenhower Matrix Task Prioritizer — sort tasks into Do First, Schedule, Delegate, or Eliminate quadrants. Tasks persist in localStorage across browser sessions. Hover any task to move it between quadrants or delete it.

• added

  Combinatorics Calculator — computes nCr, nPr, factorials, Catalan numbers and Stirling numbers of the 2nd kind using exact BigInt arithmetic. Step-by-step working shown, results up to 1,000 items.

• added

  Diceware Passphrase Generator — builds memorable passphrases from a 512-word list using crypto.getRandomValues. 3–10 word slider, five separator styles, capitalize and digit options, and a live entropy meter.

• added

  Ratio & Proportion Calculator — simplify a ratio to lowest terms, find the missing value X in a proportion, or scale a ratio by any factor. Step-by-step GCD working shown for every result.

• added

  HTML Formatter & Beautifier — beautify minified HTML with 2-space, 4-space or tab indent, or minify it back to a single line. Preserves script, style and pre blocks. Shows lines, output character count and bytes saved.

• added

  Image Grayscale & Effect Converter — converts any JPEG, PNG or WebP to grayscale (BT.601), sepia, high-contrast B&W, or inverted colours entirely in the browser. Before/after toggle and download with effect-labelled filename.

5 August 2026

• added

  Percentage Increase / Decrease Calculator — four modes in one tool: calculate the % change between two values, apply a rate to find a new value, reverse-solve for the original, or express the difference as a percentage of the reference.

• added

  Text Repeater & Multiplier — repeat any string N times (up to 500) with six separator options: None, New Line, Space, Comma, Pipe, or a custom string. Live Copies, Characters, and Lines stats update on every keystroke.

• added

  Line Numbering & Prefix/Suffix Tool — adds line numbers to any text with configurable start value, step, prefix, suffix and three padding modes (none, space, zero). Skip blank lines or strip existing numbers before re-numbering.

• added

  Text Wrapper / Word Wrap Tool — wraps text at any column width using word wrap (space-aware) or hard wrap (exact character cut). Six quick presets from 40 to 120 columns, with an option to break words that are longer than the target width.

• added

  Sentence Counter & Readability Analyzer — counts sentences, shows average words and characters per sentence, Flesch readability score with a visual bar, short/medium/long complexity buckets, and cards for the longest and shortest sentence.

• added

  Text Word Shuffler & Randomizer — shuffles words, lines, characters, or sentences using a Fisher-Yates algorithm. Optional seed string for reproducible shuffles — same seed always produces the same output.

• added

  Syllable Counter & Word Analyzer — counts syllables in any English text with a colour-coded per-word badge grid, distribution bar chart, most/fewest syllable cards, and a copy-ready tab-separated breakdown.

• added

  Text Separator — join lines into a delimited string or split delimited text into separate lines. Eight delimiter presets (comma, pipe, tab, semicolon, space, newline, custom) with trim and skip-empty options.

4 August 2026

• added

  Smart Capitalization Tool — capitalises text in 7 modes: Title Case (skips 19 small words), Sentence case, First word only, All words, Alternating, Inverse, and Each line. Live preview strip shows all 7 results at once.

• added

  XML Formatter & Validator — beautifies or minifies XML at 2, 4 or tab indentation, and reports every well-formedness fault with its own line and column: a closing tag that does not match, a repeated attribute, a bare ampersand, a second root element. Comments, CDATA and namespaced names survive the rewrite, and a collapsible element census lists every tag name with a click-to-copy path.

• added

  Live Character Limit Checker — counts characters in real time against 13 platform limits (X/Twitter, LinkedIn, Instagram, YouTube, SEO meta tags, SMS and more) with a ring gauge, over-limit warning, and a full comparison table across all platforms.

• added

  Word Frequency Counter — ranks every word in pasted text by occurrence count and density, with stopword filtering, min-length control, sortable table and bar-chart views, and CSV export.

3 August 2026

• added

  Pomodoro Timer — 25-minute focus sessions with configurable short and long breaks, session dot tracking, SVG ring progress, Web Audio API sound alerts, and auto-start support. Sits in the Productivity category.

2 August 2026

• New toolEmoji Remover & Extractorin Text & Content
• New toolFraction Calculator & Simplifierin Math & Calc
• New toolImage Format Converter — PNG, JPG, WebPin Image & Design
• New toolJSON Diff Checker & Compare Toolin Code & Dev
• New toolQuadratic Equation Solverin Math & Calc

• changed

  The homepage and category blurbs were rewritten and moved under the content audit. They had been the only prose on the site the audit could not see, and all eight category blocks had drifted into one template.

• added

  This changelog, and an About page explaining who builds the site and why nothing is uploaded.

1 August 2026

• New toolImage Resizer — Resize by Pixels or %in Image & Design
• New toolLoan Calculator — EMI & Amortizationin Math & Calc

• added

  A content audit now runs before every build and fails it on templated copy: banned marketing phrases, repeated section headings, and paragraphs whose sentences are all the same length.

31 July 2026

• New toolAPI Load Tester & Response Time Monitorin Code & Dev
• New toolBig-O Analyzer & Runtime Benchmarkin Competitive Programming
• New toolDynamic Time Greeting Generatorin Productivity
• New toolOffline Judge & Test Case Runnerin Competitive Programming
• New toolRandom JSON Payload Generatorin Code & Dev
• New toolRegex Tester & Explainerin Code & Dev

30 July 2026

• added

  Related-tool suggestions at the bottom of each tool page.

27 July 2026

• added

  Drag-and-drop page reordering in Images to PDF Converter, so the output order is fixed before the file is written rather than after.

25 July 2026

• changed

  Category pages moved to /category/[slug], and tools can now appear under more than one category. JWT Decoder sits in Code and shows up under Security too.

• removed

  PDF Text Extractor was pulled. It handled clean digital PDFs and quietly produced nothing useful on scanned ones, which is worse than not shipping it.

24 July 2026

• changed

  Tool URLs were flattened from /tools/[slug] to /[category]/[slug]. Old links still resolve.