WebP Compressor

What this tool does

Choose a WebP, set the quality and download a smaller one. The page reports the original size, the new size and the saving.

How to use it

1. Choose a WebP file, or drop it on the page.
2. Set the quality with the slider. It starts at 75%.
3. Press Compress WebP.
4. Check the original size, the new size and the saving. If the new file is larger, the page tells you, and you should keep the original.
5. Press the download button to save the result.

Where it runs

The work happens in your browser, using the canvas feature that every current browser has. The image is not uploaded and nothing is stored on this site’s server.

How it behaves

WebP files from this tool are lossy and use the quality slider from 10 to 100. Lower numbers drop more detail and make smaller files. Transparency is preserved. The scale behaves like JPEG’s, so 75 to 85 is a good place to begin for photographs.

Before you compress

• Check the source. If the WebP was already encoded at a low quality, compressing it further stacks losses and the result degrades quickly. If you have the original JPG or PNG, create a new WebP from that.
• Resize if the image is bigger than it needs to be. Use the Image Resizer.
• If the result is larger, the original was already well compressed. Keep the original.

Limits

• Metadata such as EXIF, location and colour profiles is not carried over.
• Animated images become a single still frame.
• Browsers apply EXIF rotation when they open a photo, so it normally comes out the right way up.
• The page states a 20 MB maximum but doesn’t check it in the browser. Very large images depend on your device’s memory.
• Only one image is handled per run.

If you only need to serve modern browsers you could also try WebP to AVIF for a smaller file, bearing in mind the trade-offs described there.