WebP vs every other web image format
Honest, number-driven comparisons to help you decide when WebP is the right choice and when it is not. Spoiler: for almost every image on a website, WebP wins on size, features and compatibility combined.
At a glance
Web image formats compared on the criteria that matter for a website
| Format | Typical size vs JPEG | Transparency | Animation | Browser support | Best for |
|---|---|---|---|---|---|
| WebP | 25–35% smaller | Yes | Yes | 97%+ | Everything on the web today |
| JPEG | Baseline | No | No | 100% | Legacy compatibility, camera originals |
| PNG | 3–10x larger | Yes (lossless) | No | 100% | Pixel-perfect assets, source files |
| AVIF | ~50% smaller | Yes | Yes | ~93% | Very large hero images with a WebP fallback |
| GIF | 5–20x larger (animated) | 1-bit | Yes | 100% | Nothing new; convert it |
Size figures are typical ranges at equivalent visual quality (SSIM). Browser support from caniuse.com, global usage, 2026.
Detailed comparisons
WebP vs JPEG
WebP wins for the web. It produces 25–35% smaller files than JPEG at equal visual quality, supports transparency and animation, and is displayed natively by 97%+ of browsers. Keep JPEG only as a fallback for legacy clients or when a platform does not accept WebP.
WebP vs PNG
Use PNG as a working/source format and WebP for everything you publish. WebP lossless is ~26% smaller than PNG; WebP lossy with alpha is typically 60–80% smaller with no visible difference. Only serve PNG when a platform explicitly requires it.
WebP vs AVIF
AVIF wins on raw compression (10–20% smaller than WebP at equal quality) but loses on encode speed, tooling and platform support. WebP is the safe default for every site; AVIF is worth adding as a first `<source>` in `<picture>` when you have an automated pipeline and traffic at scale.