Turn images into a single A4 PDF
What this tool does
This page comes set to A4 with normal margins, so dropped images are fitted to the page and nothing is cropped to make them fit.
Pre-set for you: A4 (210 × 297 mm) page size, normal (0.5 in) page margins, Balanced (JPEG 85%). You can change it before you drop a file.
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OffscreenCanvas support, and we will not fall back to building it on the
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Use the arrows to reorder — the list order becomes the page order.
- Pages
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- Page size
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- File size
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How this works
The PDF is assembled inside a Web Worker in this browser tab: each image is fitted to its page and written into a single document, which your browser then saves. A scanned stack of paperwork never leaves your device.
- Page size is A4, US Letter, or each page sized to its own image so nothing is padded or cropped unexpectedly.
- Landscape images get a landscape page automatically, so a photo is never shrunk to fit the short side of a portrait sheet.
- Drag in more images at any time — the list order is the page order, and it can be rearranged before you build.
- JPEG and PNG are written into the PDF as they are. Other formats are converted first, because PDF does not store WebP or HEIC.
- Nothing is stored: reloading the page discards everything.
A4 is the page size almost everywhere outside North America, and it is already selected here along with normal half-inch margins. Drop your images and each one becomes a page in a single PDF, built entirely in your browser.
The layout rule is simple and worth knowing before you look at the result: each image is scaled to fit inside the printable area — the page minus the margins — with its proportions kept. Nothing is cropped to fill the page, and nothing is stretched to match its shape. A landscape photo on an A4 portrait page appears smaller, centred, with white space above and below. That is the correct behaviour for documents: a PDF is read as pages, and a page that has been sliced to fill a sheet loses content at the edges.
If you would rather have no white space, you have two options here. Switch the page size to match each image, which makes every page the size of its own picture and ignores margins entirely. Or crop your images to A4's proportions beforehand, which fills the page using the part of each picture you chose.
A few details that decide how good the result looks:
- Page order is the order you drop them in, and you can rearrange it with the move buttons before building the PDF. For a scanned document, getting this right at the start is easier than fixing it afterwards.
- Mixed orientations are fine. Portrait and landscape pages can sit in the same document, each fitted to the same printable area.
- The quality setting applies to images that have to be re-encoded — PNG and WebP sources — converting them to JPEG at high, balanced or smaller quality. Photographic sources that are already JPEG are embedded as they are, so nothing is re-compressed twice.
Because the PDF is assembled locally, there is no upload and no page limit imposed by a server. A file that would be awkward to send anywhere never leaves your machine, and the result downloads straight to your device when it is ready.
Frequently asked questions
Will my images be cropped to fill the A4 page?
No. Each image is scaled down to fit inside the printable area and centred, so what you keep is the whole picture. Any space left over stays white.
Can I change the margins or the page size?
Yes, both are in the panel — A4, US Letter or match-each-image for the page, and none, small or normal for the margins. The page arrives on A4 with normal margins as a starting point.
Can I reorder the pages before saving?
Yes. Every dropped image appears in a list with move controls, and the PDF is built in whatever order the list shows when you press the button.
Does the quality setting re-compress my JPEGs?
No. The quality setting applies to images that must be re-encoded to go into the PDF, such as PNG and WebP files. Photos that are already JPEG are embedded as they are.
Image to PDF with different settings
Add images and they are assembled into one PDF file inside your browser tab, in the order you arrange them. Scanned documents and photos never leave your device.