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Compress WebP
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Most WebP files on the web are lossy, encoded with Google's VP8 algorithm. Re-encoding at a lower quality level reduces file size by discarding additional high-frequency detail — the same principle as JPEG re-encoding, but WebP's compression algorithm starts from a more efficient baseline. The quality-to-size trade-off in WebP is steep: dropping from quality 90 to 80 often reduces file size by 30–50% with minimal perceptible change, because WebP encodes quality non-linearly and concentrates the savings in a narrow band around the mid-quality range. The tool also lets you set a maximum pixel dimension, which can produce a far larger reduction than quality adjustment alone for images that are significantly larger than their display size.
When you’d want to compress
- Further reducing WebP assets that are already on a website but could be smaller
- Scaling down oversized WebP exports from a design tool or camera pipeline
- Hitting a file-size target for an upload limit or CDN threshold
- Batch-optimising a library of WebP images before publishing
What to watch for
How to Use
- 1
Drop your WebP files onto the upload area or click to browse.
- 2
Set the quality slider. Quality 78–85 is a solid range for web images already in WebP format.
- 3
Optionally enter a maximum width or height to also scale down pixel dimensions.
- 4
Download compressed files. Check the result before discarding originals.
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Related Guide
PNG vs JPG vs WebP vs AVIFFrequently Asked Questions
How much smaller can a WebP file get?
From quality 90 to 80, most WebP photographs compress by 30–50%. From quality 85 to 75, another 20–30% is typical. Exact savings depend on image complexity — smooth, low-frequency content (sky, gradients) compresses more aggressively than fine texture (hair, foliage).
Is it worth compressing WebP further or should I convert to AVIF?
If you are optimising for modern browsers (Chrome 85+, Firefox 93+, Safari 16+), converting to AVIF with the Image Converter typically saves 20–35% over an equivalent WebP at the same quality. For broader compatibility or when you need to stay in WebP format, re-encoding at a lower quality is the right approach.
Can I compress animated WebP?
The tool processes only the first frame of an animated WebP. For animated WebP compression, a dedicated animation tool is needed. If you only need a static frame, this tool extracts it efficiently.
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