WebP Compressor Online
Free — No Upload
Reduce the file size of WebP, JPG and PNG images with quality and size controls. Everything runs in your browser.
Drop your image here
JPG, PNG, WEBP — up to 20 MB
Also try these free tools
Last updated: October 2026
How Do You Compress a WebP Image?
To compress a WebP image, load it, lower the quality slider, optionally set a smaller maximum dimension, and download the result — free, in your browser, with nothing uploaded. WebP is already an efficient format, so the biggest savings usually come from reducing pixel dimensions rather than quality alone.
- Add the WebP (or a JPG or PNG).
- Lower quality to around 70 to 80 first.
- Reduce the maximum dimension if the file is still large.
- Download the compressed file.
What Format Do You Get Back?
Be aware of the output format: opaque images (including opaque WebP) are saved as JPEG, which compresses reliably and opens everywhere. WebP or PNG files with real transparency are kept as lossless PNG so the transparent area is preserved. If you need the result to stay in WebP format, convert it afterward in an editor that exports WebP.
| You upload | You download |
|---|---|
| Opaque WebP, JPG or PNG | JPEG at your chosen quality |
| WebP or PNG with transparency | PNG (lossless), smaller only if resized |
When Does Compressing WebP Make Sense?
- A WebP exported at high quality is much larger than the page needs.
- A form or marketplace rejects files over a size limit (for example 200KB): see compress to 200KB.
- You want one JPEG that opens in every email client and office app.
Re-compressing a lossy file loses a little more detail each time, so keep the original and compress a copy.
Frequently Asked Questions
What is the best free WebP compressor?
Any browser-based compressor that does not upload your file works well. imgmend compresses WebP, JPG and PNG in your browser with quality and size controls, free and with no account.
Does compressing a WebP keep it as WebP?
Opaque images come back as JPEG. WebP files with real transparency come back as PNG so the transparency is kept.
Why is my compressed WebP not much smaller?
WebP is already efficient. Lower the quality further and reduce the maximum width or height; pixel count has the biggest effect.
Is my image uploaded?
No. Everything runs in your browser on your device.
Can I compress many WebP files at once?
The tool handles one image at a time.