Browse all MIME types

image/avif

AVIF targets aggressive image compression for the modern web, trading older compatibility for smaller payloads and strong visual quality.

image
Usually already encoded

Content-Type header

Content-Type: image/avif
Common extensions
.avif

How teams usually encounter it

This page maps the media type to the file extensions and delivery behaviors developers usually care about: browser parsing, upload validation, cache correctness, and asset handling.

Compression signal

image/avif is usually already compressed or stored in a binary-heavy format, so extra transfer compression tends to help less.

Server config snippets

Use these when a server is missing the right extension-to-MIME mapping or you want the expected header to survive a proxy, CDN, or custom asset bucket setup.

Nginx
types {
  image/avif avif;
}
Apache
AddType image/avif .avif

Signature note

This MIME type does not include a magic-byte sample here because the signature is either format-dependent or not reliable enough to present as a debugging shortcut.

Operational shortcut

If a browser downloads this asset instead of rendering it correctly, check the response header first, then verify the extension mapping on your origin and edge cache. .avif is the fastest sanity check for teammates reviewing the file outside the app.

Related image types