July 6, 2026
WebP vs JPG vs AVIF: which image format to use in 2026
Three formats cover almost every photo on the web today. Here is how they actually compare, without the theory.
The short version
- JPG — the universal one. Every device, app and form accepts it. Baseline compression.
- WebP — the balanced one. 25–35% smaller than JPG at the same visible quality, supported by every modern browser, handles transparency.
- AVIF — the efficient one. Roughly half the size of JPG at the same quality, but encoding is slower and very old software cannot open it.
Real-world numbers
A typical 12-megapixel phone photo, saved for the web at good quality:
| Format | Typical size |
|---|---|
| JPG (quality 80) | ~1.8 MB |
| WebP (quality 80) | ~1.2 MB |
| AVIF (quality equivalent) | ~0.9 MB |
The exact numbers vary with content — photos with fine detail compress worse, flat graphics compress dramatically better — but the ranking is consistent.
Simple rules for choosing
- Sending to another person or uploading to a form? Use JPG. Compatibility beats every other concern.
- Publishing on your own website? Use WebP — the best balance of savings and support — or AVIF if your pipeline can generate a JPG fallback.
- Need transparency? WebP or AVIF. Use PNG to WebP to shrink transparent graphics by 60–90%.
- Archiving originals or editing repeatedly? PNG — lossless — and compress a copy for sharing.
Does converting between them lose quality?
Converting from a lossy format to another lossy format re-encodes the image, so tiny losses accumulate. One conversion at quality 80+ is invisible in practice; ten round-trips are not. Convert once, from the best original you have — and if you need to hit a specific file size afterwards, do it in the same step with a target-size compressor.