AVIF's Milestone and Its Implications
Today marks a pivotal moment in web development history: AVIF (AV1 Image File Format) has officially achieved Baseline Widely Available status. This milestone was triggered by Edge 121—the last major browser to adopt AVIF support—reaching its 30-month anniversary. While Edge’s update occurred years ago, the clock on "widely available" status only starts ticking once a browser version’s usage stabilizes in the wild. Now, with Edge 121’s market share solidified, AVIF is no longer confined to early adopters or experimental use cases.
The Mechanism of Baseline Availability
Baseline availability isn’t just a label—it’s a threshold of reliability. For a format to qualify, it must be supported by browsers representing ≥90% of global users. Edge 121’s maturation pushed AVIF past this barrier. Mechanically, this means developers can now deploy AVIF without fearing broken experiences for the majority of users. The causal chain is clear: Edge support → stabilized browser market share → reliable fallback-free implementation.
Adoption Barriers: Beyond Browser Support
