Turning a folder of scans into one PDF is the sort of task that normally ends with an upload to a site you have never heard of. Images to PDF does it through the browser's own print engine instead: your pictures are assembled into a document, one image per page, and handed to the print dialog where you choose Save as PDF.
That route is the reason nothing is uploaded. There is no server, no queue and no watermark, because the file is built and rendered on your machine from beginning to end.
Page order is whatever the list shows, and the list is reorderable by dragging a thumbnail or nudging it with the arrow controls. Each image is centred on a page sized to the full viewport and scaled with object-fit: contain, so a portrait scan and a landscape photo can share one document without either being stretched.
Getting a Multi-Page PDF Out of a Folder
- Drag your images onto the dashed panel or click it to pick several at once. Anything that is not an image is rejected as it is read.
- Reorder the thumbnails. Dragging one onto another swaps their positions, and the arrows move a single page by one step, which is easier for a small correction.
- Press the download button. A new tab opens with the assembled document and the print dialog appears about 0.6 seconds later, once the images have painted.
- Choose Save as PDF as the destination. The suggested filename is timestamped down to the second, so repeated exports do not overwrite each other.
- Set margins to none and enable background graphics in the dialog if you want edge-to-edge pages, since those are print settings rather than something the tool controls.
Format Notes and the Popup-Blocker Case
- Any format your browser can decode works, so all 4 of JPEG, PNG, WebP and GIF are fine. An animated GIF contributes its first frame and nothing else.
- If your popup blocker stops the new tab, the print dialog cannot be reached at all. Rather than failing silently the tool downloads a
.html file and tells you what happened, so open that file and print it yourself. - Page size and orientation come from the print dialog rather than from here. A landscape photo on an A4 portrait page is letterboxed, and switching the dialog to landscape fixes it.
- Every image is embedded as a data URL in one document held in memory, so a few dozen phone photographs is a realistic ceiling before the tab starts to struggle.
- Image quality passes through untouched, since nothing is recompressed. That keeps a 300 dpi scan sharp and means a 40-page document of 12-megapixel photographs will be very large indeed.