Convert WebP to PNG
Convert WebP images to PNG in your browser, keeping transparency. Expect the file to grow — PNG stores every pixel exactly, artefacts included.
Drop files here (up to 50)
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How it works
The header is checked for an animation marker first, then the image is decoded to raw pixels and written straight back out as PNG. There is no quality setting because PNG is lossless: whatever the WebP decoder produced is what gets stored, byte for byte, alpha channel included. All of it happens in a Web Worker on your own processor.
Measured results
These figures come from running this exact tool over a fixed set of sample files on every build, not from an estimate.
| Sample file | Settings | Before | After | Change |
|---|---|---|---|---|
| logo-transparent.webp | lossless | 8 KB | 34 KB | +305% |
| photo-gradient.webp | lossless | 519 KB | 3.40 MB | +570% |
Benchmark run 2026-08-01.
What to watch out for
A lossy WebP has already been compressed by throwing information away. PNG then records the result perfectly, including every compression artefact, as though the artefacts were real detail. Growth of five to ten times is entirely normal and is not a fault in the conversion.
Converting a lossy WebP to PNG cannot restore what the first encoder discarded. The PNG is a faithful copy of a damaged image, not a repaired one. Only a WebP that was saved in lossless mode round-trips with nothing lost.
The browser decoder returns the first frame of an animated WebP without signalling anything unusual. The header is therefore inspected up front and animations are rejected, because handing back one frame of many is a silent loss you would find out about too late.
Limits
Files up to about 50 MB work reliably. Beyond that, the ceiling is your device's memory rather than any rule we impose — the work happens on your own machine. Tested in Chrome 140, Firefox 143, Safari 18.
When a bigger file is the right outcome
Almost every other converter on this site exists to make files smaller. This one usually makes them larger, and that is fine, because size is not why you are here.
PNG is the format software understands. Desktop editors, presentation tools, document processors, icon pipelines, older operating systems and a great many internal business applications accept PNG without argument. If something has refused your WebP, this is the shortest route to a file it will open, and the transparency comes with it.
It is also the right destination when the image is about to be edited. Every lossy save degrades an image a little further; converting once to a lossless format means the next ten edits cost nothing in quality.
Why the growth is so large
It surprises people, so it is worth explaining rather than waving away.
Lossy compression works by discarding information the eye is unlikely to miss — subtle colour variation, fine texture, precision in smooth gradients. What comes out of the decoder is not the original picture but an approximation of it, complete with faint ringing near edges and slight blockiness in flat areas.
PNG makes no judgements about what matters. It stores every pixel it is given, exactly, and those artefacts are pixels like any other. Worse, they are irregular pixels, and irregularity is precisely what compresses badly. A smooth gradient stores efficiently; a smooth gradient with compression noise sprinkled through it does not.
Transparency survives
Both formats carry a real alpha channel, so a cut-out logo arrives with its edges intact and no background colour is invented anywhere. Nothing needs to be decided, and nothing needs to be undone later.
No upload, no exceptions
The conversion runs entirely in your browser. Files are never transmitted, there is no account, no watermark and no limit imposed by anyone’s hosting costs — the practical ceiling is your own device’s memory.
Your files never leave your browser. Last updated 2026-08-01.
Next step
Your file is already here in this browser, so the next tool starts with it loaded.
Related tools
- Convert WebP to JPGTurn WebP images into JPG files that open anywhere, in your browser. Useful when an app, printer or older program refuses to accept a WebP file.
- Convert PNG to WebPConvert PNG images to WebP in your browser with transparency intact. Logos and screenshots get much smaller without the white box JPEG leaves behind.
- Convert JPG to PNGConvert JPG photos to lossless PNG in your browser. No upload and no watermark. Useful when a tool refuses JPEG or you need to edit without further loss.