AVIF (AV1 Image File Format) is an image and animation file format, an extension of HEIF allowing images encoded with AV1. Most files will only have AV1-encoded images, but a mixture of different encodings is allowed. Early draft versions were named AV1 Still Image File Format.

Used in file types
  • .avif
  • .avifs
This type may also appear as

This type isn't known to appear as any other mime types

Further reading
  1. Let's Solve the File Format Problem!

  2. Internet Assigned Numbers Authority (IANA)

  3. Wikipedia