HEIC to AVIF Converter

1. Upload one or more HEIC 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 is the newest image format, built on the AV1 codec. It typically produces files 50% smaller than JPG — more efficient than both HEIC and WebP. Converting HEIC to AVIF future-proofs your photos for next-gen web delivery.

AVIF is the newest mainstream image format, developed by the Alliance for Open Media (Google, Apple, Netflix, Amazon, etc.). It's based on the royalty-free AV1 codec and typically produces files 50% smaller than JPG — the most efficient mainstream still-image format today. Converting HEIC to AVIF lets you future-proof your photo library and achieve even better compression for modern browser delivery.

The converter decodes the HEVC-compressed HEIC image and re-encodes it as AVIF using libavif at 85% quality. AV1-based compression is significantly more efficient than HEVC for still images. Transparency from HEIC's alpha channel is preserved (AVIF supports 8-bit alpha). EXIF metadata is preserved.

• Future-proofing a photo library for the next 5-10 years.
• Achieving maximum compression for bandwidth-sensitive websites.
• Preparing images for modern web frameworks (Next.js, SvelteKit, Remix).
• Optimizing hero images and above-the-fold content for Core Web Vitals.
• Reducing CDN delivery costs for high-traffic image sites.
• Storing photos in the most efficient format available today.
• Preparing images for HDR displays (AVIF supports 10-bit HDR).

AVIF output uses 85% quality — visually indistinguishable from the source HEIC at normal viewing distances. AV1's compression is more efficient than HEVC, so AVIF files are typically 20-30% smaller than HEIC equivalents at the same perceived quality. AVIF is the most efficient mainstream still-image format available today.

• Very old browsers (released before 2020) cannot display AVIF.
• Some CMS platforms (pre-2023 versions) reject AVIF uploads.
• Native support in Photoshop is only in version 23.2+.
• AVIF encoding is slower than WebP or JPG — up to 4 seconds per image.
• Animated HEIC sequences are converted using only the first frame.

• AVIF opens natively in every modern browser (Chrome 85+, Firefox 93+, Safari 16+).
• Native support in Windows 11, macOS Big Sur+, iOS 16+, Android 12+.
• Supported by modern CMS platforms (WordPress via plugin, Ghost, Next.js).
• Native import in Photoshop 23.2+, GIMP 2.10.22+, Affinity Photo 2+.
• Supported by modern CDNs and image optimization services.

• AVIF is supported by every browser released after 2020 — safe for modern websites.
• For older browsers, serve AVIF with JPG or WebP fallback via <picture>.
• AVIF encoding is slower — expect 2-4 seconds per image.
• AVIF is the best format for HDR-capable displays.
• Keep the original HEIC if your destination is iPhone or Mac.

AVIF conversion is slow

AVIF encoding is CPU-intensive. Typical conversion is 2-4 seconds per image. This is expected — the trade-off for the most efficient compression.

AVIF file won't open in older browser

AVIF requires Chrome 85+, Firefox 93+, Safari 16+, or Edge 121+. For older browser support, use WebP instead or serve AVIF with fallback.

AVIF file is smaller than expected

AVIF files are typically 20-30% smaller than HEIC and 50% smaller than JPG. If the source HEIC was already heavily compressed, the AVIF saving will be smaller.

• Alliance for Open Media — AVIF
• Can I Use — AVIF
• ISO/IEC 23008-12:2017 — HEIF