How to compress WebP images
- Add your still WebP images with Select files or drag and drop.
- Set the Quality; 75–80 suits most website images.
- Click Compress and review the size savings.
- Compare before and after, then download the files or a ZIP.
When re-compressing WebP helps
WebP is already efficient, but design tools, content management systems and exporters often save it at very high quality. Re-encoding at 75–80 can still cut the size considerably for hero images, product galleries and thumbnails, which directly improves page load times.
Check the image dimensions too. A WebP displayed 800 pixels wide but stored at 3000 pixels wastes far more bytes than a slightly high quality setting, so resize it with Resize Image first and then compress.
Transparency and animation
Lossy WebP keeps the alpha channel, so transparent images stay transparent. This tool is designed for still images: animated WebP files would be reduced to their first frame, so keep those as they are.
Some design tools export graphics as lossless WebP; re-encoding those at a lossy quality often gives the largest reduction of all.
Browser requirements
Compression uses the WebP encoder built into your browser, which Chrome, Edge and Firefox provide. Safari can display WebP but cannot create it. On Safari you can still make a lighter copy by converting with WebP to JPG, or compress other formats with the Image Compressor.
Frequently asked questions
Why doesn't this work in Safari?
Safari cannot encode WebP images. Use Chrome, Edge or Firefox.
What quality should I choose?
Start at 80 and lower it while the comparison still looks right to you.
My WebP got only slightly smaller. Why?
It was probably already saved at a moderate quality. Further savings will mostly come from reducing its dimensions.
Can I compress animated WebP files?
No. Only still images are supported; an animation would be reduced to its first frame.