Why this tool is different
If you are putting images on a website, WebP is the easiest speed win available: comparable quality to JPEG in noticeably fewer bytes, supported by every current browser. This converts a batch on your device, so you are not uploading client work to somebody else's server to save a few kilobytes.
How it works
- 1
Add one or more JPG files.
- 2
Choose a quality — 80 is a good default for the web.
- 3
We decode and encode WebP.
- 4
Download individually or as a ZIP.
What to watch out for
Do not re-encode repeatedly
You are converting one lossy format to another, so quality drops slightly. Convert from the highest-quality original you have, not from an already-compressed copy.
Keep a JPG fallback if you need one
Every current browser supports WebP, but old software and some upload forms do not. Keep the JPG originals.
Typical savings
At matched visual quality, expect 25 to 35 percent smaller files. Photographs with smooth gradients benefit most.
Frequently asked questions
Is WebP better than JPG?
For the web, generally yes — smaller files at similar quality, plus transparency and animation support. For universal compatibility, JPG is still safer.
Do all browsers support WebP?
Every current version of Chrome, Firefox, Safari and Edge does. Very old software may not.
What quality setting should I use?
80 is a good default for web images. Go to 90 for photography portfolios, and down to 70 for thumbnails.
Are my files uploaded to a server?
No. The conversion runs in JavaScript and WebAssembly inside your own browser. Open your devtools, switch to the Network tab and run a conversion — there is no upload request to see. Closing the tab clears the working session.