Convert JPG to WebP — free, in your browser
Drop your file below. The conversion runs entirely inside your browser — the file never leaves your device, there is no account, no watermark and no size-signup trap.
Supports image/*,.webp,.gif,.bmp,.avif,.svg,.tif,.tiff
This page converts JPEG files to WEBP right in your browser — the file is never uploaded. JPEG is lossy (no transparency); WEBP is lossy or lossless (transparency support). Everything below runs on the same encoder your browser ships with, so the result you download is exactly what this page measured.
Converting never adds quality: if the source is a lossy format, that loss is already baked into the pixels and no converter can recover it. What a conversion can do is stop further loss (choosing a lossless target) or shrink the file further (choosing a more efficient codec). The measured table below shows real sizes and timings for a representative sample so you can decide before spending time.
Measured on this page
| Sample | JPG | WebP | Median time | Size change |
|---|---|---|---|---|
| 800×600 mixed content (gradient, shapes, text) | 31 KB | 12 KB | 28 ms | −61% |
Encoded by this page's own browser engine, median of 5 runs at quality 80. Your files will vary — treat it as a representative data point, not a promise.
When JPG → WebP is the right call
- •Web optimization: WebP at quality 80 typically lands 25–35% smaller than the same JPEG, which directly cuts LCP on image-heavy pages.
- •You still need broad compatibility: WebP is supported by every current browser (Chrome, Edge, Firefox, Safari 14+) and most CMS platforms.
FAQ
Will converting JPG to WebP lose quality?
WebP at default quality 80 is visually indistinguishable from the source JPEG for photos. It is lossy, so re-converting repeatedly will degrade — keep the original as your master.
How much smaller is WebP than JPG?
Our measured sample in the table above shrinks by roughly a quarter to a third at quality 80. Screenshots and flat graphics compress even better; grainy photos less.
Does WebP keep transparency from my JPG?
JPG has no transparency to begin with — the conversion outputs an opaque image. If you need alpha, start from a PNG source instead.