.png to .avif with black bg instead of transparent Alpha channel

[kaspar-allenbach]

I have some .png with alpha channels. On my staging, env all looks nice. On my local workstation as well.
But on my laptop, the images get a black background instead.

I convert them from .png to .avif via named transforms.

Any idea what to look out for? I just use regular ddev everywhere. Don't know where there is a configuration mismatch.

On the staging which does it correctly: Imagick 3.7
On the local env which does it wrong: Imagick 3.8

[aelvan]

Hi,

This is a known issue, and has to do with how Imagick was compiled. I don't know exactly the details of it (think it is Imagick compiled against ImageMagick 6.x, but I've also had instances where that worked, so..), but the version that's in ddev and normal version of ubuntu, has this bug.

Unfortunately, there's no quickfix for this, Imagick has to be recompiled, preferably with ImageMagick 7. https://softcreatr.github.io/imei/ can be used to make this easier.

Another option is to use GD instead of Imagick, recent versions (from PHP 8.2+) usually have avif support included.

[kaspar-allenbach]

Thank you. As long as it works on the staging environments, I don't care for local envs. Just don't want to be surprised in production environments, lol