Does converting WebP to PNG lose quality?

No. PNG is lossless, so the PNG holds exactly the pixels the WebP decodes to. Detail a lossy WebP already discarded cannot be recovered.

Is transparency kept?

Yes. The alpha channel of the WebP is written to the PNG unchanged.

WebP compresses much harder than PNG, especially for photos. A larger PNG is expected and does not mean anything was added.

PNG holds a single image, so an animated WebP exports its first frame.

No. WebP files are decoded and converted in your browser, and nothing is sent to a server.

Convert WebP images to PNG online for free. Lossless output with transparency kept, batch conversion and ZIP download, all in your browser.

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Converts WebP images to lossless PNG and keeps transparency. An animated WebP exports its first frame.

Files are converted in this browser and are never uploaded. Up to 20 files, 50 MB each and 256 MB per batch.