Compress
Compress WebP images
Re-compress WebP images to a smaller size or an exact kilobyte target, entirely in your browser.
Drop images here
or · drop a folder · paste from clipboard
WebP is already an efficient format, so a WebP file that is still too large is usually either larger in pixels than it needs to be, or was encoded at a very high quality setting. Both are fixable here.
The encoder used is libwebp, the reference implementation from the team that created the format, compiled to run in your browser. That means the same encoder a build pipeline would use, with the same quality and effort controls, without installing anything.
For images destined for a web page, quality 75 to 85 is the range worth trying first. Below that the gradients in photographs start to band visibly. If you need a specific budget instead, switch to target file size and give it a number.
How to compress webp images
- Drop your WebP files onto the box above.
- Lower the quality, set a target size, or reduce the dimensions.
- Download the results individually or as a ZIP.
Frequently asked questions
Are my images uploaded to a server?
No. The conversion runs inside your browser using WebAssembly, so the image data never leaves your device. That also means there is no queue, no account, and no file size cap imposed by a server.
Does re-compressing a WebP lose quality?
Yes — lossy WebP discards data each time it is encoded. Compress from your original file where possible rather than from an already-compressed copy.
What does encoder effort do?
It controls how hard libwebp works to find an efficient encoding. Higher values search more thoroughly and give better quality per byte, at the cost of speed. It is under Advanced, and the default of 4 is a sensible balance.
Can I convert several images at once?
Yes. Drop in as many files as you like — or a whole folder — and they are processed in parallel across your CPU cores. When they finish you can download them individually or grab everything as a single ZIP.