WEBP → PDF
WEBP to PDF converter
Drop your WEBP files and get a single PDF, a picture per page, in the order you added them. The decoding and the page layout happen in this tab, so the images stay on your device.
A PDF has no WEBP filter, so every image is decoded to pixels first and then stored with lossless compression. Nothing is added to the picture, transparency is flattened onto white, and the finished PDF will be larger than the WEBP files it came from.
How to convert WEBP to PDF
Add the WEBP files
Drop as many as you like on the box above, or pick them from disk. One page per file, in the order you added them.
Set the page
Choose A4, US Letter or fit-to-image, then the margin in points. Fit is the usual pick when the images have different aspect ratios, since each page then takes its picture's shape.
Download and weigh
Save the PDF and check its size before you share it. Every page holds raw pixels under lossless compression, so the document can be many times the size of the WEBP folder you started with.
Why a WEBP has to be re-encoded for PDF
WEBP is not a single codec but a container: a RIFF file holding either a lossy VP8 stream, a lossless VP8L one or an animation, with an optional alpha channel beside it. Browsers decode all of that, but PDF has no WEBP filter — its native image streams are JPEG, Flate and a few older formats — so a WEBP cannot be copied into a page the way a JPEG can. It has to be decoded to pixels first, which is where the size difference comes from.
Those pixels are then stored with lossless Flate compression, so the artefacts a lossy WEBP already carries are frozen into the page rather than added to: no detail comes back, and none is thrown away either. In practice a small WEBP photograph can become a PDF page many times its size, because lossless storage cannot squeeze a photograph the way the codec it arrived in did. If size matters more than exactness, convert the WEBP to JPG before building the PDF, at the cost of one more lossy step.
WEBP to PDF questions
Does the conversion lose any quality?
No further loss is added: the WEBP is decoded to exactly the pixels your browser would display, and those pixels are stored losslessly in the page. Whatever the original lossy encode discarded stays discarded, and any transparency it had is flattened onto white, because PDF pages have no alpha channel.
Which page size suits screen images?
WEBP graphics are usually screen-sized, so fit-to-image keeps each page exactly as wide and as tall as the picture and avoids white bands around it. A4 and US Letter are the better choice when the PDF has to be printed or filed next to paper documents, even though they add margins around an ordinary screenshot.
How is my file handled while it converts?
It is decoded in this tab and written into the PDF in memory, so the image is never sent anywhere and the tool works with no network connection once it has loaded. Nothing is stored on a server, because there is no server step at all.
Why is the PDF so much bigger than my WEBP files?
PDF cannot store a WEBP stream, so each image is unpacked to raw pixels and then compressed with Flate, which is a far weaker squeeze than the codec the file arrived in. Each input must be under 64 MB; the finished PDF has no fixed ceiling, but it is built inside the tab's memory.