Technical MIME Specification & Web Server Guide
image/avif
Technical overview, official IANA specification, header magic bytes, and server configuration snippets for .AVIF files (AV1 Image File Format).
File Extension
.avif
Content-Type Header
image/avif
Format Category
Images
Standard Specification
AOMedia AVIF Spec
Description & Usage
Next-generation image format based on AV1 video keyframe encoding.
HTTP Server Content-Type Configuration Code
# Nginx mime.types configuration for .avif
types {
image/avif avif;
}OS Compatibility Matrix
Windows
macOS
Linux
Android
iOS
Want to test header signatures or binary files?
Run binary magic byte inspection in Magic Byte Detector.
Frequently Asked Questions
The official MIME content type for .avif files is "image/avif". Web servers use this header to instruct browsers how to render or process .avif data.