Compress WebP Images Online
Compress WebP files with a quality slider and see the real saving for every image. Everything runs in your browser.
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How it works
Add your WebP files
Drop up to 30 WebP images onto the box, or click it to choose them.
Lower the quality slider
Start at 75% and move it down until the image still looks right.
Download the smaller files
Each result shows its measured saving. Save them one by one or as a ZIP.
How to compress WebP files
Add your WebP images, choose a quality and press Compress. Each image is re-encoded as WebP in your browser at that quality. You see the original size, the new size and the percentage saved for every file.
Quality settings guide
| Quality | Typical use | Expect |
|---|---|---|
| 90% | Detailed artwork, product photos | Small saving, very high detail |
| 80% | General website images | Balanced size and detail |
| 70% | Large hero and background images | Noticeably smaller files |
| 60% | Thumbnails and previews | Smallest files, softer detail |
Honest results
If re-encoding would make a file larger, AllWebP keeps your original and tells you it is already well optimised. You never download a bigger file by accident.
Tips to compress WebP further
- Resize oversized images first. Pixel dimensions affect size more than quality does.
- Do not compress the same file again and again, because quality drops each time.
- Serve images at the size they are displayed, and lazy-load images below the fold.
- Compare the result on the real page before you replace your files.
If you need a different format
To convert JPG or PNG files while shrinking them, use JPG to WebP or PNG to WebP. For mixed formats, try Compress Image.
Why compress WebP files?
WebP is already efficient, but images exported from design tools or cameras are often saved at a higher quality than a page needs. When you compress WebP files again at a sensible quality, you can trim page weight further, especially for hero images and galleries.
Frequently Asked Questions
How much smaller will my WebP get?
It depends on the image and its starting quality. The size shown next to each file is the measured result.
Will I see a quality loss?
At 75% or above most people cannot tell the difference on normal photos.
Does compressing change the dimensions?
No. Only the file size changes, not the width and height in pixels.
Can I compress many files?
Yes, up to 30 per batch, downloadable as a ZIP.
Are my images uploaded?
No. Files are processed in your browser.