AVIF vs WebP — Which Is Smaller for the Web?

For websites, smaller images mean faster Largest Contentful Paint. AVIF and WebP both beat classic JPEG in many cases — but they are not identical.

Short comparison

• AVIF — often the smallest at similar visual quality; encoding can be slower; support is strong in modern browsers but not universal everywhere.
• WebP — excellent size/quality balance; very wide browser support; great default for most sites.
• JPEG — still the safest for old portals, email clients, and strict upload validators.

Practical recommendation

1. Use WebP (or AVIF + WebP fallbacks) for marketing sites.
2. Keep JPEG for forms that reject modern formats.
3. Always compare a real photo at your target quality — charts lie, eyes don’t.
4. Compress after convert if you still need a KB cap.