JPG to WebP converter
WebP stores the same photograph in noticeably less space than JPG. If the images are going on a website, this is the straightforward win. It runs on your device.
Nothing is uploaded
The conversion runs on your own device. Turn your network off once it starts and it still finishes.
No cap on the file
There is no server bill to protect here, so the only limit is your own device, not a plan tier.
No signup, no watermark
No account, no trial, and no upgrade prompt on the download. Ads pay for the site.
Up to 50 at a time
Drop a pile of pictures in together. More than one result arrives as a single zip.
Why convert JPG to WebP?
This is the most common image optimisation on the web, and for once the recommendation is uncontroversial: at a matched quality, WebP is typically 25 to 35 percent smaller than JPG.
Where it pays is a page carrying many photographs. Cutting a third off every image is the difference between a product page that appears immediately on a phone connection and one where the pictures fill in slowly as you scroll.
Unlike the AVIF version of this conversion, there is very little to weigh up. Every browser released in the last several years reads WebP.
What changes in the file
- The file gets meaningfully smaller with no visible difference at normal viewing size.
- The image is re-encoded, so this is a second lossy pass over an already lossy file. It is not visible in practice, but converting back and forth repeatedly is still a bad habit.
- WebP can store transparency; a JPG has none, so the result is opaque. That only matters if you were hoping the conversion would add it, which it cannot.
How to convert
- Check that WebP is the selected format above. It is picked for you on this page.
- Drop your JPG images into the box, or click it to browse.
- Download the result. It never left your device.
Frequently asked questions
How much smaller will my photos get?
Usually a quarter to a third. Photos with large smooth areas, like skies and studio backgrounds, gain more; busy detailed scenes gain less.
Will the photo look worse?
Not at normal viewing size. It is a second lossy encode, so zoomed right in on fine detail a difference exists, but it is not what anyone looking at the photo will see.
Can I convert a whole folder at once?
Yes, up to 50 pictures per go. They come back as a single zip. Converting a folder of site images is exactly what the batch mode is for.
Other conversions
- JPG to PNG When something downstream will only take a PNG.
- HEIC to WebP Keeps HEIC-like file sizes, but the web can actually read it.
- PNG to WebP Smaller than PNG, and transparency still survives.
Or open the image converter to pick any combination, and the image compressor when the problem is size rather than format.