article WebP vs AVIF (2026) | 247QuickTools
⚖️ Comparison · Updated for 2026

WebP vs AVIF

Side-by-side comparison, when-to-use-each guide, and instant conversion. Reviewed for 2026.

Quick answer: WebP (Google, 2010): smaller than JPEG/PNG, universal browser support since 2020. AVIF (AOMedia, 2019): even smaller (~30% smaller than WebP at same quality), based on AV1 video codec. Browser support 95%+ in 2026. Modern best practice: serve AVIF with WebP fallback.
Decision guide — when to use which
Use WebP when…

Maximum compatibility (everything since 2020).

Use AVIF when…

Cutting-edge optimisation (2024+) — most browsers, smallest files.

📊 Side-by-side comparison
Aspect WebP AVIF
Year 2010 2019
Compression vs JPEG ~25-35% smaller ~50% smaller
Compression vs WebP — ~30% smaller
Encode speed Fast Slow (build time)
Browser support Universal 95%+ (early 2024 onwards)

Frequently asked

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Should I switch to AVIF now?

Yes, with WebP and JPEG fallback via HTML <picture> tag. AVIF support is now broad enough that the bandwidth saving is worthwhile. The slow encode is a build-time cost, not a serving cost.

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What about JPEG XL?

Technically superior to both WebP and AVIF, but Chrome dropped support in 2022. Without Chrome, it's not viable for mainstream web. The momentum is firmly behind AVIF as the next standard.

Reviewed for 2026. All conversion factors and historical references verified against official sources (ISO standards, government weights & measures legislation, IEC technical specifications). Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project. We don't sell SEO links or accept paid placements in this content.

Frequently asked questions

Should I switch to AVIF now?

Yes, with WebP and JPEG fallback via HTML <picture> tag. AVIF support is now broad enough that the bandwidth saving is worthwhile. The slow encode is a build-time cost, not a serving cost.

What about JPEG XL?

Technically superior to both WebP and AVIF, but Chrome dropped support in 2022. Without Chrome, it's not viable for mainstream web. The momentum is firmly behind AVIF as the next standard.