Your images are never uploaded anywhere
Convert JPG to WebP
Last updated: August 29, 2026
Drop your WebP images and download them as JPG or PNG. No file limit, and nothing gets uploaded to a server.
Your images never leave your device. Nothing is uploaded, nothing is stored, and no one else can see them.
No file size limit (depends on your device's memory).
How to convert JPG to WebP
- Drop your JPG or PNG images. Add as many as you want at once.
- Set the quality. 75 to 85 is the sweet spot for the web: almost invisible, and far smaller files.
- Download. One by one, or all together as a ZIP.
Why convert your images to WebP
WebP is the format Google created in 2010 for exactly this purpose: to replace JPG and PNG on the web. It compresses considerably better at the same visible quality, so the same photo takes up less space and the page loads faster. In our own test with five images at typical website sizes, the batch went from 452 KB as JPG to 233 KB as WebP at quality 82 — 48.5% smaller, with no difference you can see.
That saving feeds straight into LCP (one of the Core Web Vitals metrics Google uses as a ranking signal), into the mobile data of whoever visits you, and into your bandwidth bill if your host meters it. Compatibility is no longer an excuse either: WebP works in over 97% of browsers in active use.
JPG, PNG and WebP: when to use each
| Format | Best for | Transparency | Weight |
|---|---|---|---|
| WebP | Images on your own website (the main use) | Yes | Lightest |
| JPG | Sharing, printing, attaching to forms | No | Middling |
| PNG | Logos, screenshots with text, transparency | Yes | Heaviest |
Why this tool never uploads your images
Same as the HEIC converter: everything happens in your browser, using its own image engine. There's no backend receiving anything, and you can verify it yourself by turning off WiFi before converting — it'll keep working.
For hundreds of images it's better to do it in a batch on your own machine, without spending your host's CPU.
See the batch conversion guide
FAQ
How much smaller is WebP than JPG?
Between 25% and 50% smaller at the same visible quality, depending on image content. In our own test with five images at typical website sizes, the batch went from 452 KB as JPG to 233 KB as WebP at quality 82, a 48.5% reduction.
Do all browsers support WebP?
Yes. WebP is supported by over 97% of browsers in active use, including current versions of Chrome, Firefox, Safari and Edge. Only very old systems and some desktop applications still don't recognise it.
What quality should I pick when converting to WebP?
75 to 85 is the sweet spot for the web: the visual difference from the original is practically invisible and the file is meaningfully smaller. Below 70, artifacts start showing in smooth gradients.
Is my image uploaded to a server?
No. Like every tool on this site, the conversion happens in your browser. You can verify it by turning off your WiFi: the tool keeps working.
Can I convert a PNG with transparency to WebP?
Yes. WebP supports transparency just like PNG, so the alpha channel is preserved. That's one of WebP's advantages over JPG, which has no transparency support.
How many images can I convert at once?
There's no file limit. Drop as many as you need and download them together as a ZIP, which is handy for moving a whole website image gallery over to WebP.
← Convert WebP to JPG (the other direction) · Compress images