JPG to WebP
Convert JPG to WebP free to make your website faster. Same quality, smaller files, batch supported. Nothing is uploaded.
The 10-second test: switch off your Wi-Fi (or turn on airplane mode) and use this tool anyway. It keeps working — because there is no server doing the work.
The technical check: open your browser's developer tools, go to the Network tab, and run the tool. Your file is never sent anywhere.
Measured live on this page — files transmitted: 0 · file data sent: 0 bytes
This counter hooks the browser's own networking functions, so it would rise the instant any file data left this page. The only thing this site ever transmits is the contact form, if you choose to send one.
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or drag & drop — pasting works too (Ctrl+V)
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How to convert JPG to WebP
WebP usually stores the same photo about 25-35% smaller than JPG at matching quality. For a site with many images, that is a direct speed win — and speed is a Google ranking factor.
Smaller files for the same picture
WebP achieves roughly 25-35% smaller files than JPG at equivalent quality. On a page carrying a dozen photographs that is a meaningful difference to load time, which is why sites that care about speed have moved to it.
The catch with converting JPG to WebP
You are re-encoding an image that was already lossily compressed, so a little more detail goes each time. One conversion is fine. What you should avoid is a chain — JPG to WebP to JPG and back — which visibly degrades the image. Convert from the highest-quality original you have.
Use it for the web, not for sending
Browsers all support WebP. Desktop software and upload forms often do not, so keep a JPG for anything you need to email or submit.
Frequently asked questions
Will my photos look worse?
No — at the default quality the difference is not visible. WebP is simply a more efficient way to store the same image.
Can I go back to JPG later?
Yes, convert in the other direction any time with the same tool.
Does it work in bulk?
Yes, convert a whole folder of photos in one go.