image/*
image/avif
File extensions: .avif
Next-generation image format based on AV1 video encoding.
What is image/avif?
image/avif is the media type for AVIF — an image format based on the AV1 video codec. It typically produces files 50% smaller than JPEG at similar perceived quality, with full transparency and HDR support.
Typical usage
Photographs on modern sites where every byte matters, hero images.
Common gotchas
AVIF encoding is CPU-heavy. Pre-generate at build time rather than encoding on request. Older browsers (pre-2022) do not support it — provide WebP or JPEG fallbacks.
HTTP header example
Response header
Content-Type: image/avif