ImageMagick 7

[prudloff-insite]

Our Drupal website uses ImageMagick to convert images to the AVIF format and we noticed transparent pixels were replaced by black pixels.
Apparently this is fixed in ImageMagick 7 : https://alexwlchan.net/2023/check-for-transparency/

However, ImageMagick 7 does not seem to be available in Debian yet.

[prudloff-insite]

We also tried to use GD but the version in Docksal does not seem to support AVIF.
As a workaround, we might add cavif-rs to our image.