Browser edition: files stay on your device. Up to 100 MB total and 10 minutes. First use downloads a 32 MB engine. Some formats depend on codec support. Public-link downloading is not ready on this free deployment.
Convert PNG to WebP
Convert PNG to WebP online for free — right in your browser, without uploading. Real conversion, batch support, no sign-up.
How to convert PNG to WebP
- Add your fileDrop it on the page, choose it from your device, or paste it with Ctrl+V.
- ConvertAdjust settings if you like, then press the button. You'll see live progress.
- Browser processing uses original files on your device. Public-link downloading is unavailable.
What happens to your file
PNG files are common for logos, screenshots, graphics with transparency, but not every app or device opens them. WebP works best for website images, faster page loads. Spool converts PNG to WebP with FFmpeg and libheif/Pillow — real decoding and encoding, not a renamed file extension.
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Settings
- Quality — 30–100%
PNG vs WebP
| PNG | WebP | |
|---|---|---|
| Full name | Portable Network Graphics | WebP |
| Created by | W3C, 1996 | Google, 2010 |
| Type | Image | Image |
| Typical contents | lossless DEFLATE compression with alpha channel | VP8-based lossy or lossless compression with alpha |
| Best for | logos, screenshots, graphics with transparency | website images, faster page loads |
| Strength | Lossless quality | Much smaller than JPG and PNG |
| Weakness | Large files for photographs | Some older apps, printers and Windows Photo Viewer versions cannot open it |
About PNG
- Type
- Portable Network Graphics
- Contains
- lossless DEFLATE compression with alpha channel
- Use
- logos, screenshots, graphics with transparency
About WebP
- Type
- WebP
- Contains
- VP8-based lossy or lossless compression with alpha
- Use
- website images, faster page loads
FAQ
Are my photos uploaded?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Can I convert several PNG files at once?
Yes. Drop up to 10 files at a time — each one is converted in parallel and you can download them individually or all at once.
Is there a file size limit?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Is this PNG to WebP converter free and safe?
Yes. There are no pop-ups, redirects or fake download buttons, and no software to install. Files are transferred over HTTPS, processed in isolated job folders and deleted automatically.