All Tool Categories
Every one of the 240 free online tools on UtilityToolsLab is grouped into 23 categories so you can find the right utility in a single click. Pick a category below to see its full toolset — text formatters and word counters, image compressors and color converters, JSON and JWT developer utilities, everyday calculators, password and security generators, competitive programming visualizers, browser-based PDF tools, and daily productivity helpers. Every tool runs entirely in your browser with no uploads, no accounts, and no sign-up.
Text & Content Tools
80 tools
Case converters, counters, formatters and word tools
Image & Design Tools
20 tools
Compressors, color tools, CSS generators and more
Code & Dev Tools
110 tools
JSON, Base64, UUID, JWT, timestamps and encoders
Math & Calc Tools
43 tools
Percentage, BMI, tip, temperature and unit converters
Security Tools
28 tools
Password generators, hash tools and crypto utilities
Competitive Programming Tools
33 tools
Algorithms, Big-O analysis, I/O generators and code formatters for coders
PDF Utilities Tools
10 tools
100% client-side PDF tools — no uploads, no servers, full privacy
Productivity Tools
17 tools
Greeting generators, planners, timers and daily workflow helpers
Writing & Editing Tools
27 tools
Speech synthesis, readability tests and drafting aids
Encryption & Keys Tools
6 tools
AES file encryption, key pairs and certificate tooling
Auth, Privacy & Validation Tools
7 tools
2FA codes, cookie inspection, sanitisers and validators
Crypto Wallets & Keys Tools
6 tools
Mnemonics, HD derivation, address validation — all offline
Smart Contracts & EVM Tools
6 tools
ABI, selectors, Merkle proofs, gas and EIP-712 tooling
Blockchain Encoding Tools
8 tools
Keccak, RLP, Base58, Bech32 and CID utilities
DeFi & Tokenomics Tools
5 tools
Impermanent loss, staking, APY, vesting and mining maths
On-Page SEO Tools
8 tools
Meta tags, canonicals, hreflang, SERP preview and slugs
Content & Social Tools Tools
6 tools
Captions, hashtags, headlines, subject lines and ad copy
Schema & Structured Data Tools
5 tools
JSON-LD generators for FAQ, product, event, recipe and more
Marketing & Ad Calculators Tools
5 tools
UTM, CTR, CPC, CPM, CPA, CLV, CAC and A/B significance
Number & Base Tools Tools
6 tools
Primes, factorials, base conversion, matrices and randomisers
Date & Time Tools Tools
7 tools
Differences, time zones, timers, clocks and working days
Gaming Tools Tools
1 tool
Stylish name generators, font pickers, and symbol palettes for mobile games
Free eBooks Tools
1 tool
Downloadable PDF guides and study books, free and without signup