Compress WebP
Re-encode WebP images at a chosen quality and report the exact byte change.
Browser onlyYour data never leaves this device.
Compression happens inside your browser. The WebP file you choose is never uploaded or stored anywhere.
Details: Privacy policy
Input
Drop files here or Browse
Drag and drop works here too.WebP up to 20 MB and 40 megapixels. Drag and drop or browse.
The picture is re-encoded at your quality setting. Metadata such as camera, date, and GPS tags is not copied to the output, and decoding or encoding WebP requires browser support.
Result
No image yet.
Choose a WebP above, then compress and download it locally.
Compress WebP re-encodes a WebP image at the quality level you choose, optionally capping the longest edge, and reports the exact bytes before and after. Because WebP support varies, the tool states plainly when a browser cannot decode or encode the format rather than quietly handing you a PNG or JPEG that you did not ask for. It always writes WebP, and the size cap is applied only when you set one. Nothing is uploaded: the decode, re-encode and byte count all happen in the page.
How to use Compress WebP
- Drop a WebP file up to 20 MB and 40 megapixels.
- Set the quality slider and, optionally, a maximum width or height.
- Press Compress WebP, read the byte summary, then download or clear the result.
What you get
- A re-encoded WebP at your chosen quality, with transparency kept rather than flattened.
- Exact byte counts before and after, with the saving shown as a rounded percentage.
- An explicit message when the browser cannot decode or encode WebP, instead of a silent switch to another format.
When to use Compress WebP
- Reduce a screenshot saved as WebP before attaching it to a bug report.
- Cap hero images at 1200 pixels and quality 70 to compare the byte saving against the original.
- Verify how much a WebP actually shrinks instead of trusting an estimate.
Jobs you can do with Compress WebP
Frequently asked questions about Compress WebP
What happens if my browser cannot encode WebP?
You get an explicit message naming the problem and pointing at the JPG or PNG compression tools. The tool never silently substitutes another format.
Does compressing a WebP a second time hurt the image?
Yes. Each lossy pass removes a little more detail. Start again from the highest-quality copy you still have rather than re-compressing the compressed result.
Is transparency kept when I compress a WebP?
Yes. WebP carries an alpha channel and the re-encode preserves it. Only conversions to JPG flatten transparency onto white.
Why does the summary sometimes say the file grew?
A WebP that was already optimized can be larger after a fresh encode. The summary reports the real bytes, and you can lower the quality further or keep the original file.
Guides that compare Compress WebP
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