Convert JPG to WebP
Convert JPG to WebP right in your browser — free, private, nothing is uploaded. Smaller files at the same quality, transparency included.
Convert JPG to WebP →Free · Private — runs in your browser, nothing is uploaded
JPEG is the default format for photographs — lossy compression tuned for natural images keeps files small, and support is universal. It has no alpha channel, so transparency is always flattened.
WebP is the modern web format: at similar visual quality it produces noticeably smaller files than both JPEG and PNG, and it supports alpha transparency.
Converting JPG to WebP usually cuts file size at the same visual quality — WebP out-compresses JPG on most images — while keeping alpha transparency available.
JPG vs WebP
| JPG | WebP | |
|---|---|---|
| Compression | lossy — some detail traded for size | lossy — some detail traded for size |
| Codec / container | lossy DCT-compressed JPEG | WebP — written lossy here, with a quality knob |
| Typical file size | small — the quality knob trades size against artifacts | smallest of the web formats at comparable quality |
| Best for | photos and everyday web images | modern web images — photos and graphics alike |
| Strength | small files for photos; opens absolutely everywhere | smaller than JPEG/PNG at similar quality, with transparency |
| Watch out for | no transparency; visible artifacts at low quality settings | a few older apps and viewers still don't open it |
| Compatibility | universal | all modern browsers; some older desktop software lags |
| Transparency | no — transparent areas are flattened | yes — alpha supported |
| Animation | no | possible in WebP, but this converter writes still images |
How the conversion works
- Choose your JPG image. The button above opens the converter with WebP already selected as the target format.
- Set the quality from 1 to 100 (default 85) — higher keeps more detail, lower shrinks the file.
- Run the conversion and download the WebP image. Everything happens locally — ffmpeg compiled to WebAssembly runs in your browser tab, your image is never uploaded, and the page keeps working offline once it has loaded.
What to expect
Generation loss stacks. Both JPG and WebP are lossy, so each re-encode discards a little more. One conversion at quality 85 is rarely visible; repeated round-trips are.
FAQ
Will converting JPG to WebP lose quality?
A little, in principle: both JPG and WebP are lossy, so the re-encode discards a bit more. At the default quality of 85 the difference is rarely visible — but keep the original if you expect to convert again.
How does the quality setting work for WebP?
Quality runs from 1 to 100 (default 85) and is mapped onto ffmpeg's encoder scale. Higher values keep more detail and grow the file; for most images 80–90 is the sweet spot. It only applies to lossy targets — PNG ignores it.
Is my JPG image uploaded when converting to WebP?
No. The conversion runs entirely in your browser with ffmpeg compiled to WebAssembly — your image never leaves your device, and the page keeps working offline once it has loaded.