Image to PDF
Convert your images into a PDF document. Drag to reorder.
Drop the images you want bundled into a PDF
Supports JPG, PNG, WebP, GIF
Choose Images
Creating PDF...
Convert your images into a PDF document. Drag to reorder.
Supports JPG, PNG, WebP, GIF
Your photos never leave the device. Everything is assembled inside this browser tab.
This is the setting that decides what kind of document you end up with, and the right answer depends entirely on where it is going.
Fit to Image makes each page match its photograph exactly — no borders, no letterboxing, no wasted space. Right for photo albums, portfolios, artwork, screenshots and anything that will be read on a screen. The pages will vary in size if your images do, which viewers handle without complaint.
A4 or Letter puts every image on a standard sheet. Right for anything that will be printed, filed, or submitted somewhere. Photographed documents, receipts for an expense claim, ID scans for an application — these want consistent pages, because that is what printers and portals expect. Pick the size your region actually uses: A4 nearly everywhere, Letter in the US and Canada.
Margins only apply on a fixed page size, and small is a sensible default. Zero is right when the image should bleed to the page edge; medium or large gives room for hole-punching or binding.
Photographing paper with a phone is now the normal way documents get digitised, and phone photos of paper have a characteristic problem: uneven lighting. One side of the page is bright, the other falls into shadow, and there is usually a soft grey cast across the middle from the photographer's own shadow.
The Enhance document photos option evens that out. It lifts the page towards a clean white background and pushes the ink towards solid black, so the result reads like a scan rather than a snapshot. Text becomes markedly easier to read, and it compresses far better afterwards, because a page of clean white and black holds much less detail than a page of a hundred subtle greys.
Leave it off for actual photographs. It is tuned for pages of text and will flatten the tones in a portrait or a landscape. The rule is simple: on if the subject is paper, off if it is a scene.
With enhancement off, JPEG and PNG images are embedded directly with their original data untouched — no re-encoding, no quality loss. Other formats your camera or browser might produce, including HEIC, WebP, AVIF and BMP, are decoded and converted so they can be embedded, since the PDF format itself does not carry those.
Phone scanning apps are convenient and many are good. The trade is what happens to your documents: most upload pages to a server for processing, a fair number require an account, and the free tiers tend to stamp a watermark across the output or cap the page count.
Here, the pictures stay on your device. There is no account, no watermark, no page limit, and no upload — the images are read by your browser, the PDF is assembled in the tab, and the result lands in your downloads. Given that the documents people photograph are passports, bank letters, medical records and signed contracts, that difference is the reason to use it.
Afterwards, the rest of the toolkit continues the job: OCR makes the text searchable, Compress PDF gets a batch of photos under an upload limit, Reorder Pages fixes the sequence, and Merge PDF joins the result to an existing document.
Transparent areas are composited onto a white background, which is what a printed page needs — transparency has no meaning on paper. For a logo that must stay transparent, keep the original PNG alongside the PDF.
There is no fixed cap; your device's memory is the limit, and modern phone photos of 12 to 50 megapixels are handled comfortably. Very large images across a long batch use more memory — if a big job feels slow, build it in two halves and Merge them.
Images are embedded as picture data, so camera metadata does not travel into the document as searchable properties. Set the document's own title and author with Edit Metadata — worth doing before anything goes outside your organisation.
No. Page size affects the shape of the page, not the image data. With enhancement off, JPEG and PNG files are embedded exactly as they are, with no re-encoding. Turning enhancement on necessarily changes pixels, since adjusting the lighting is the whole point.
Pages follow the order the images are listed in. If the result needs rearranging, Reorder Pages gives you a drag-and-drop thumbnail grid, which is the easier way to sort a long batch.
Yes — build the PDF here, then run it through OCR. That reads the page images and writes a real text layer, so the document becomes searchable and its text selectable. Turning enhancement on first improves recognition accuracy noticeably.
Phone photos are big, so a ten-page batch adds up quickly. Compress PDF handles it — and for photographed paper, its Scanned Document mode typically cuts the file by around ten times while making the text look sharper.
No. They are read by your browser, assembled into a PDF in this tab, and handed to your downloads. Nothing is transmitted or stored. Go offline before you start and it still works — a fair test when the photos are of your passport.
Privacy: Your photos never leave the browser. pdf-lib embeds bytes directly into the PDF — there is no server step, and EXIF data is not written into the output.