JPG/JPEG to WebP — Online Image Converter
Convert JPG/JPEG to WebP online. Private, client-side — no upload required. Fast batch converter.
About JPG/JPEG to WebP
JPG compresses photos with lossy quantization and no alpha channel, so files stay small while transparency is dropped. WebP re-encodes the same photo with a more recent codec, keeping similar detail at fewer bytes. There is no transparency to preserve, so flatten the source onto a background before converting. Stills carry no frames, so animation settings do not apply. Set the quality slider near 80 to 90 and match the source dimensions, then keep the JPG original in case you need another export.
Why convert JPG/JPEG to WebP?
- 采用 WebP 的 lossless or lossy 压缩，大小灵活--有损更小，无损保质。
- 在支持的情况下保留 动画和透明度。
- Private, no upload - runs in your browser.
JPG/JPEG vs WebP
| 动画 | 否 | 是 |
|---|---|---|
| 透明度 | 否 | 是 |
| 压缩 | lossy | lossless or lossy |
| 典型用途 | JPG 与 JPEG 是同一编解码器，只是采用 DOS 时代命名的三位扩展名。 | WebP 以更好的压缩存储静态和动画图像。 |
When not to convert JPG/JPEG to WebP
- Skip WebP for archival masters: lossy compression discards detail, so keep the JPG/JPEG original.
- No motion to preserve: JPG/JPEG is a still, so pick WebP for size or compatibility rather than animation.
Limits
Starting point: JPG/JPEG - Small lossy photos for web pages and sharing. No transparency support, so alpha channels are dropped. Use the quality slider to balance size and fidelity. Set the quality slider near 80-90 for WebP photos from JPG/JPEG, and keep dimensions matched to the source.
How conversion works
Conversion runs entirely in your browser with the WASM image engine. Files never leave your device.