How do I convert JPG to WebP for free?
Upload the JPG or JPEG above, set the quality, and download the WebP. It is free and runs locally in your browser.
Is WebP smaller than JPG?
Usually yes. WebP typically produces smaller files than JPG at a similar visual quality, which is why it is popular for the web.
Will converting reduce quality?
Both formats are lossy, so use a high quality setting and start from the best JPG to keep the result clean.
Is the file uploaded anywhere?
No. The conversion happens in your browser and the image stays on your device.
How much smaller will the WebP be?
Usually 25 to 35 percent smaller than the source JPG at comparable visual quality, so a 400 KB photo typically lands in the high 200s. The exact saving depends on the image: photographic detail compresses well, while a small flat graphic can occasionally come out slightly larger.
What quality setting should I use?
The slider runs from 0.4 to 0.98 and defaults to 0.92. For web photos, 0.75 to 0.85 is the practical range: above 0.90 the file grows fast for a gain nobody can see, below 0.65 fine detail starts to smear.
Does converting from JPG make the image worse?
Slightly, because you are re-encoding already-lossy data with a second lossy codec. It is not visible at sensible quality settings, but it does mean you should always convert from the best JPG you have rather than from a copy that has already been compressed once.
Is WebP safe to use everywhere?
In browsers, yes: every current browser supports it. Outside them it is patchier, and some desktop viewers, printer workflows, and upload forms still reject it. Convert for the web and keep the JPG for everything else.
Is the image uploaded?
No. The JPG is decoded and re-encoded as WebP on a canvas in your browser, so it never leaves your device.