WebP vs AVIF vs JPG: Which Image Format to Use in 2026
Real size numbers, browser support, and a decision rule for every image on your site — plus free batch conversion that runs locally.
JPG won the 2000s. WebP won the 2010s. AVIF is winning now — but "best" depends on where the image goes, not just what's newest.
TL;DR: WebP at quality 80 for general web use (~30% smaller than JPEG), AVIF for maximum savings where supported, JPG only where compatibility is forced. Convert batches free with the Bulk Image Converter or squeeze AVIF further with the Bulk AVIF Optimizer.
Real Numbers (Same Photo, 1600px)
- JPEG quality 85: ~420 KB baseline
- WebP quality 80: ~270 KB (visually identical)
- AVIF quality 65: ~190 KB (visually identical)
Same pixels on screen, less than half the bytes. Across 500 product images, that is the difference between a 200 MB media library and an 85 MB one.
Browser Support in 2026
WebP renders in 95%+ of browsers — safe as the default. AVIF covers most modern traffic (Chrome, Firefox, Safari 16+, Edge) with graceful fallbacks for the rest. Serve AVIF first with WebP fallback for hero images, WebP everywhere else.
The Decision Rule
- Photos for web → WebP 80. Convert the folder with the Bulk Image Converter in one batch.
- iPhone originals → convert HEIC to JPG for universal sharing first.
- Heroes where bytes matter most → AVIF with WebP fallback.
- Anything requiring transparency → PNG or WebP lossless, never JPEG.
Keep reading
- How WebAssembly is Replacing Server-Side Converters — what makes in-browser batch conversion possible
Related free tools
- Bulk Image Converter — whole folders, 100+ format pairs
- Photo Editor — crop and tune before you convert
- Bulk AVIF Optimizer — AVIF at its smallest
- AVIF to JPG — when a browser refuses AVIF
- HEIC to JPG — iPhone photos to universal JPGs