Coming from typo3 you can choose between imagemagick (version 5,6, …), graphicsmagick or gdlib. And you must specify the location where you installed it. How does shopware do that? Where can I enter the path to the binary?
Shopware is using gdlib to generate thumbnail images. Since Shopware 5.2.17 it additionally uses tools like jpgoptim / pngoptim to compress thumbnails after they have been generated:
We published a plugin that replaces the thumbnail generation with a routine that uses imagemagick convert to resize and compress the images:
Shopware is using gdlib to generate thumbnail images. Since Shopware 5.2.17 it additionally uses tools like jpgoptim / pngoptim to compress thumbnails after they have been generated: