WebP Compress
Re-encode WebP images at a smaller size.
- Free
- No sign-up
- Private: runs in your browser
| Image | Size | Before | After | Saved | Actions |
|---|
How to compress WebP images
- Drop your WebP files on the box above, click to choose them, or paste an image with Ctrl+V.
- Set the quality. 75 to 80 suits most websites; go lower for thumbnails and previews.
- Optionally enter a maximum width so oversized images match the space they are shown in.
- Compare before and after with the slider, then download one file or all of them as a ZIP.
Why WebP is worth optimising
WebP already beats JPG and PNG on size, which is why page speed tools recommend it. But a WebP file exported at quality 100, or at 4000 pixels wide for a 800 pixel slot, still wastes bandwidth. Matching the quality and size to how the image is really used is the quickest win for faster pages and better Core Web Vitals.
Tips
- Serve the size you display. If a hero image is shown 1600 pixels wide, there is no benefit in a 3200 pixel file for most visitors.
- Check text and edges. Use the compare slider on images with text; if letters look soft, raise the quality a little.
- Keep the original. Each lossy save loses some detail, so always compress from the master file.
Runs in your browser
There is no upload and no server: your browser decodes and re-encodes each image locally. That keeps your pictures private, makes the tool fast even on large batches and means there are no daily limits. If a re-encoded file would end up larger than the original, the original is kept.
Frequently asked questions
Can a WebP file be compressed further?
Often, yes. Many WebP files are saved at high quality or at a larger size than needed. Re-encoding at quality 70 to 80, or scaling down to the size you display, can cut the file by half or more.
Is transparency kept in WebP?
Yes. WebP supports an alpha channel, and the compressed file keeps transparent areas.
Which browsers can run this tool?
Chrome, Edge, Firefox, Opera and other Chromium browsers can save WebP files. Safari can open WebP images but cannot encode them, so on Safari the tool shows a clear message instead of a wrong file.
Are my images uploaded?
No. All work happens in your browser. Your images never leave your device and there are no file limits.
Do animated WebP files stay animated?
No. The browser decodes the first frame only, so the result is a still image. Use a dedicated animation tool for animated WebP.
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