WebP vs JPEG — Modern Image Format Comparison
Compare WebP and JPEG for web image delivery. Learn about compression efficiency, quality differences, browser support, and when to migrate from JPEG to WebP for faster page loads.
Key Takeaways
- At equivalent visual quality (SSIM), WebP produces files 25-35% smaller than JPEG.
- WebP is supported by Chrome, Firefox, Safari (14.1+), and Edge.
- For new projects, WebP should be the default image format.
Compress Image
Reduce image file size while keeping quality.
WebP vs JPEG Comparison
| Feature | JPEG | WebP |
|---|---|---|
| Year | 1992 | 2010 |
| Compression | DCT lossy | VP8 lossy + lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Size (same quality) | Baseline | 25-35% smaller |
| Browser support | 100% | 97%+ |
Compression Efficiency
At equivalent visual quality (SSIM), WebP produces files 25-35% smaller than JPEG. The savings come from VP8's more advanced prediction and entropy coding compared to JPEG's 1992-era DCT.
Browser Support
WebP is supported by Chrome, Firefox, Safari (14.1+), and Edge. The remaining ~3% of browsers that lack support are primarily older Safari versions. Use
Should You Switch?
For new projects, WebP should be the default image format. For existing sites, prioritize converting hero images and thumbnails first, as these provide the most performance impact.
Migration Strategy
- Generate WebP versions alongside existing JPEGs
- Use
- Configure server to serve WebP via Accept header (content negotiation)