Image → PDF Converter
Turn a pile of pictures into one PDF
Drop photos or scans, set page size, orientation and margin, and export a single paginated PDF.
Image → PDF Converter
Runs in your browser · nothing uploaded01 — How to use Image → PDF Converter
02 — Getting good results
03 — Questions
No. The PDF is assembled in your browser with pdf-lib. No image and no finished document is transmitted anywhere, which is the point when the images are receipts, identity documents or private photographs.
Not once they are queued. Page order follows the order files were added, so add them in sequence. Most file pickers let you select in a specific order, and dropping in batches appends rather than replaces.
Two reasons. Images are embedded at their full pixel dimensions no matter how small they appear on the page, and any format other than JPEG or PNG is re-encoded to PNG, which is lossless and often much larger than a modern lossy format. Compressing or resizing first addresses both.
No. Each page holds an image, not text. The result is a picture of a document rather than a document, so its contents cannot be selected or searched. Making scans searchable needs optical character recognition, which this tool does not do.
04 — More about Image → PDF Converter
What a PDF page actually holds
A PDF page is a coordinate space measured in points — 72 to the inch — onto which content is drawn. An image placed on a page is embedded once at its native resolution and then displayed within a rectangle you specify, so the pixel dimensions of the source and the physical size of the page are independent. This is why a small on-page photograph can still carry a huge file: the scaling is display-time, not storage-time. It is also why resizing images before building the document is the single most effective thing you can do about file size.
Contain and cover
Fitting a rectangular image into a rectangular page of a different shape forces a choice. Contain scales until the whole image fits within the margins, leaving empty space on one axis — nothing is lost, but the page is not filled. Cover scales until the page is full, which means the image extends past one pair of edges and that overflow is cut. Neither is correct in general. Photographs usually want cover, because empty bands around a picture read as a mistake. Documents and scans usually want contain, because the edges of a page often carry content and losing them silently is worse than an unfilled page.
Format support and why some images are converted
The PDF specification defines native support for a small set of image encodings; in practice pdf-lib can embed JPEG and PNG. Modern formats such as WebP and AVIF have no PDF representation at all. Rather than rejecting those files, this tool decodes them and re-encodes to PNG before embedding, which preserves every pixel exactly but discards the compression efficiency that made those formats attractive in the first place. The trade is deliberate: a larger file that works everywhere beats a smaller one that cannot be produced. Where size matters more than fidelity, converting to JPEG first with the Image Converter gives you control over that trade instead of leaving it to the default.
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Same shell, same shortcuts, same promise: nothing leaves your browser.