Drupal core has supported WebP as a destination format in the Image style "Convert" effect since Drupal 9.2 in #2340699: Let GDToolkit support WEBP image format → .
And until AVIF conversion support can be added in Drupal 10.1+ or higher via ✨ Let GDToolkit support AVIF image format Needs work , this module seems like the correct place to add similar support for AVIF for Drupal 9 and below, and particularly when AVIF support is not automatically compiled into the PHP via GD support.
Implement a new image style effect for AVIF that generally uses the same UI and approach from the core GD convert functionality. See #2340699: Let GDToolkit support WEBP image format → and ✨ Let GDToolkit support AVIF image format Needs work for reference.
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Thank you, nice idea to override core while the the patch is not accepted
@andypost Even after the core issue gets in, this issue might still be useful for people who want to use the avif_lib module to convert their images due to hosting restrictions and their version of php that might not be compiled with AVIF compatibility in GD library.