AVIF ↔ JPG · PNG · WebP bi-directional conversion. AVIF saves 50–80% vs JPG.

How to use

  1. Upload images (multiple supported).
  2. Pick output format (AVIF / WebP / JPG / PNG).
  3. Tune quality (AVIF: 85 ideal, 70 still excellent).
  4. Optionally resize via max width.
  5. Download converted files.

Key features

  • AVIF · WebP · JPG · PNG four output formats
  • Batch conversion
  • Quality 30–100 + max width resize
  • Original vs converted size shown
  • 100% browser, no uploads

Use cases

  • Website performance — 50%+ size reduction via AVIF
  • Mobile apps — small high-quality images
  • Old-browser fallback — AVIF + JPG hybrid
  • Email attachments — fit attachment limits
  • SEO scoring — Lighthouse image optimization

What is AVIF vs JPG?

AVIF (AV1 Image File Format) is a 2019 format from the Alliance for Open Media. 50–80% smaller than JPG at equal or better quality. More efficient than WebP, similar to HEIC but royalty-free. Supported in Chrome 85+, Safari 16.4+, Firefox 93+. Encoding is heavier so large images take time.

FAQ

Browser support?

~95% as of 2024. Use <picture> with JPG fallback for older browsers.

Why is AVIF slow?

Encoding is 5–10× heavier than JPG. 4K images may take 10–30s.

vs image-format?

image-format is general; this tool specializes in AVIF with quality/size comparisons.

Free?

Yes, browser-only.