Convert JPG to WebP
Free, unlimited JPG to WebP conversion that runs inside your browser. Your files never leave your device. Every conversion runs locally in your browser.
No upload · No sign-up · No file limit
or drop them here
Processed on your device · never uploaded · no limit
This converter needs JavaScript, because the conversion runs on your device rather than on a server.
The standard optimisation for websites. WebP typically produces a file 25–35% smaller than the equivalent JPG at matching visual quality, which directly improves page load times and Core Web Vitals scores. Every current browser displays WebP, though you may want to keep the JPG for anything that has to open in desktop software.
How to convert JPG to WebP
- Select your JPG files. Click "Choose JPG files" or drag them onto the box above. You can select as many as you like at once.
- Wait for the conversion. Each file is converted to WebP on your own device. Nothing is uploaded, so it finishes as fast as your hardware allows.
- Download the results. Download files individually, or take them all at once as a single ZIP archive.
JPG vs WebP
| JPG | WebP | |
|---|---|---|
| Full name | Joint Photographic Experts Group | Web Picture format |
| Introduced | 1992 | 2010 |
| Compression | Lossy | Lossy or lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Extensions | .jpg, .jpeg, .jpe | .webp |
About JPG files
JPG (also written JPEG) has been the default photographic format since 1992 and remains the most universally supported image format in existence. It uses lossy compression tuned for photographs, discarding detail the human eye is least likely to notice. Every operating system, browser, printer, and photo kiosk on the market reads it without complaint.
Where they come from: Digital cameras, older phones, and almost every website.
Drawbacks of JPG
- No transparency support — transparent areas become solid
- Lossy: quality degrades each time you re-save
- Visible banding and blocking on flat colour and sharp text
Why convert to WebP?
WebP was released by Google in 2010 to cut image weight on the web, and it does: it typically produces files 25–35% smaller than an equivalent-quality JPG. It supports both lossy and lossless modes, full transparency, and animation, making it the one format that covers everything JPG, PNG, and GIF do individually. Its weakness is not technical but social — plenty of desktop software still refuses to open it.
- Substantially smaller than JPG at matching quality
- Handles transparency and animation
- Supported by every current browser
Support: All modern browsers. Poor support outside the browser.
Common questions
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using your own device’s processor. Your JPG file is never transmitted, never stored, and never seen by us — you can disconnect from the internet after the page loads and it will still work.
Is there a file size or daily limit?
There is no daily limit and no account required. Because your device does the work rather than our server, we have no per-conversion cost to recover. The practical ceiling is your device's available memory — very large files on older phones may fail, in which case convert them in smaller batches.
Can I convert several JPG files at once?
Yes. Select or drop as many JPG files as you like and they are converted one after another, then offered as individual downloads or a single ZIP.
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