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.

File types


Also appears as

Not known to appear as any other types

Further reading

  1. Let's Solve the File Format Problem!
  2. Internet Assigned Numbers Authority (IANA)
  3. Wikipedia