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Convert JPG to WebP
WebP was designed as a smaller replacement for JPG on the web, and Google's own comparison measured it at 25–34% smaller at equivalent quality.
How to convert JPG to WebP
Drop your JPG files onto the panel above and press Convert. A whole folder at once is fine, and the WebP files download individually or as a single ZIP.
Quality is the one setting worth a glance, and 85 or above is visually indistinguishable from the original for photographs. Conversion here runs at maximum quality by default, so you only need to touch it if a smaller file matters more than fidelity — and if it does, compressing afterwards gives you finer control.
Nothing is uploaded. The decoders and encoders run as WebAssembly inside this page, which is why there is no file-size limit, no queue, and no copy of your image on anyone's server.
Why convert JPG to WebP?
WebP was designed as a smaller replacement for JPG on the web, and Google's own comparison measured it at 25–34% smaller at equivalent quality.
Every current browser supports it, so for site images the trade-off is close to free.
| JPG | WebP | |
|---|---|---|
| Compression | Lossy | Lossy or lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Support | Universal — every browser, OS, app, and print service | Every current browser (Chrome, Edge, Firefox, Safari 14+ since 2020) |
| Best for | Photographs, and anything that has to open everywhere | Images on the web, where it is the safest modern default |
What WebP does to file size
Expect roughly a quarter to a third off the JPG size at the same visual quality — more if the JPG was saved at a high quality setting.
This is a lossy-to-lossy conversion, so existing artefacts are inherited and then re-encoded — at maximum quality here, so nothing further is visibly lost. Always convert from the best JPG you have rather than from a copy that has already been compressed twice.
Frequently asked questions
How do I convert JPG to WebP?
Drop your JPG files above, choose WebP as the output, and press Convert. The files are decoded and re-encoded at maximum quality inside your browser, then download individually or as a ZIP — no upload, no account, no watermark.
Does converting JPG to WebP lose quality?
WebP is a lossy format, so the image is re-encoded — at maximum quality, where the difference is imperceptible for photographs. This is a lossy-to-lossy conversion, so existing artefacts are inherited and then re-encoded — at maximum quality here, so nothing further is visibly lost. Always convert from the best JPG you have rather than from a copy that has already been compressed twice.
Can I just rename the file to .webp?
No. The extension only labels the file, while the bytes inside follow the structure of a specific format. Renaming produces a file most software refuses to open. A real conversion decodes the image and re-encodes it in the new format, which is what happens here.
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