JPG to AVIF Converter

1. Upload one or more JPG files (up to 50 MB total).
2. Click 'Convert to AVIF' — finishes in under 4 seconds per image.
3. Download AVIF files individually, or grab all as a ZIP.

AVIF produces files 50% smaller than JPG at the same visual quality — the biggest single-file-size reduction available in mainstream image conversion. Browser support became universal in 2024.

JPG has been the standard for over 30 years, but AVIF is the biggest leap forward since JPG was introduced. AVIF files are 50% smaller at the same visual quality, which means faster page loads, lower bandwidth costs, and better Core Web Vitals scores. Since 2024, every major browser supports AVIF — so it's safe to use in modern web delivery without fallback (though fallbacks are still recommended for the oldest browsers).

The converter decodes the JPG image and re-encodes it as AVIF using libavif at 85% quality. AV1-based compression is significantly more efficient than JPG's DCT, producing files 50% smaller at comparable visual quality. EXIF metadata is preserved by default.

• Optimizing website images for faster page loads and better Core Web Vitals.
• Reducing bandwidth costs for high-traffic image sites.
• Preparing images for modern web frameworks (Next.js, SvelteKit).
• Achieving maximum compression for photo-heavy galleries.
• Converting large JPG libraries to modern efficient format.
• Preparing images for CDN delivery with automatic AVIF optimization.
• Reducing storage footprint for image archives.

AVIF output uses 85% quality — visually indistinguishable from the source JPG at normal viewing distances. AVIF's compression is significantly more efficient than JPG's, so the output is 40-60% smaller at the same quality level. AVIF also supports HDR and alpha channels, though these are not applicable to typical JPG sources.

• Very old browsers (pre-2020) cannot display AVIF.
• Some CMS platforms may not accept AVIF uploads without plugins.
• AVIF encoding is slower than JPG (2-4 sec per image).
• Very high-quality JPG sources compress less than low-quality ones.
• AVIF is not supported by Photoshop versions before 23.2.

• AVIF opens natively in every browser released since 2020.
• Native support in Windows 11, macOS Big Sur+, iOS 16+, Android 12+.
• Supported by modern CMS (WordPress via plugin, Ghost, Next.js).
• Native import in Photoshop 23.2+, GIMP 2.10.22+, Affinity Photo 2+.
• Supported by modern CDNs (Cloudflare, CloudFront, Akamai).

• AVIF is supported by every browser since 2024 — safe for modern websites.
• Serve AVIF with JPG fallback via <picture> for the oldest browsers.
• AVIF encoding is slower — expect 2-4 seconds per image.
• For maximum compatibility, serve AVIF + WebP + JPG fallbacks.
• Batch-convert up to 50 MB of JPG files at once.

AVIF conversion is slow

AV1 encoding is CPU-intensive. Typical conversion is 2-4 seconds per image. This is the trade-off for 50% smaller files.

AVIF won't open in old browser

AVIF requires browsers from 2020+. For very old browser support, use WebP or JPG instead.

Some CMS platforms reject AVIF

Install a plugin (WebP Express or similar) for WordPress, or use WebP instead of AVIF.

• Alliance for Open Media — AVIF
• Can I Use — AVIF
• ITU-T T.81 — JPEG specification