Distribution of site elements among websites that use AVIF

This diagram shows the percentages of websites using various site elements among the sites that use AVIF. See technologies overview for explanations on the methodologies used in the surveys.

How to read the diagram:
CSS is used by 96.6% of all the websites that use AVIF as image file format.

CSS

96.6%

Compression

95.5%

Default protocol https

94.8%

HTTP/3

63.1%

HTTP Strict Transport Security

40.2%

IPv6

39.4%

Default subdomain www

36.6%

HTTP/2

36.1%

35.7%

ETag

26.3%

QUIC

13.0%

W3Techs.com, 11 August 2025

Percentages of websites using various site elements among the sites that use AVIF
Note: a website may use more than one site element

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Technology Brief
AVIF
Category: Image File Formats
AVIF (AV1 Image File Format) is an image file format specification for storing images or image sequences compressed with AV1 in the HEIF file format.
Website: aomediacodec.github.io/...

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