File Format

What Is AVIF?

AVIF is a next-generation image format based on the AV1 video codec, offering the best compression efficiency available today while being royalty-free.

AVIF explained

AVIF (AV1 Image File Format) is a modern image format derived from the AV1 video codec, developed by the Alliance for Open Media. It offers significantly better compression than both JPG and WebP — typically 50% smaller than JPG and 20% smaller than WebP at equivalent visual quality. AVIF supports HDR, wide color gamut, 10- and 12-bit color depth, transparency, and both lossy and lossless compression. Being royalty-free and backed by major tech companies (Google, Apple, Mozilla, Netflix), AVIF is poised to become the dominant image format for the web, though encoding is slower than WebP and browser support, while growing fast, is not yet as complete.

Key points

Best-in-class compression: ~50% smaller than JPG, ~20% smaller than WebP
Royalty-free and open source, backed by Alliance for Open Media
Supports HDR, wide color gamut, and 10/12-bit color depth
Both lossy and lossless modes with alpha channel support
Slower encoding speed compared to WebP and JPG
Growing browser support — Chrome, Firefox, Safari all support AVIF

Real-world examples

Serving AVIF images with WebP and JPG fallbacks using the HTML picture element for maximum performance
Converting a photo gallery to AVIF to cut bandwidth usage by 50% compared to JPG
Using AVIF for HDR product photography on supported displays

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