WebP Compressor
Re-compress a WebP image at a lower quality for a smaller file.
Processed on your device — never uploaded
WebP is already efficient; expect a smaller extra saving than with JPEG.
What Is This Tool?
This tool decodes a WebP, redraws it, and re-encodes it as WebP at the quality you set. WebP is already a compact format, so gains are usually smaller than compressing a JPEG, but reducing an over-quality WebP or a large graphic can still help. Transparency is preserved.
How It Works
Drop a WebP file onto the box or select one.
Lower the WebP quality slider.
Check the preview and the new size.
Click Download WebP.
Everything runs locally in your browser — the image you choose is decoded onto an HTML canvas on your own device and is never uploaded to a server.
Features
- Adjustable WebP quality
- Keeps the alpha channel
- Original vs compressed size shown
- No dimension change unless you resize first
- Fully client-side
Common Use Cases
- Tightening WebP assets exported at a high quality
- Reducing large WebP illustrations for the web
- Getting a WebP under a size budget
- Re-optimising a folder of WebP images (one at a time)
Frequently Asked Questions
Why is the saving small?
A WebP saved at a sensible quality is already near its efficient size. Big extra savings usually require reducing the dimensions as well, using the Image Resizer.
Will re-compressing hurt quality?
Yes, slightly — lossy WebP loses a little detail each time. Compress from the highest-quality source you have.
Is transparency kept?
Yes. WebP supports an alpha channel and it is preserved here.
Can I convert to JPEG instead?
Use the Image Compressor, which lets you pick JPEG, WebP or PNG as the output.
Is it private?
Yes, the file is processed in your browser only.