Feature Request

Sometimes it is necessary to pregenerate images so that user's do not have to wait when a new version of a Webshop launches.

We are doing this by calling the CLI:

$image->getThumbnail($thumbnailFormat)->getFileSystemPath()

This command calls the generate methode and the Pimcore\Model\Asset\Image\Thumbnail\Processor if the file system path does not exist yet.

Unfortunatelly - if the thumbnail config setting is "optimized", then only a "png" will be generated, no webp which is more commonly used by modern webbrowsers. The reason is that Frontend::hasWebpSupport() is queried, which is always false in CLI scripts.

There should be a way to
1 control the format of the generated thumbnail, e.g. via listener.
2 generate all formats at once.