Advanced image handling in TYPO3 CMS uses the command line tool GraphicsMagick or ImageMagick. The tool needs to be configured correctly depending on the version that is available on the system.
This module detects the available image handling versions and sets the system accordingly. If everything is correctly set up the image tests of the install tool section "Test setup" should be fine.
If ImageMagick or GraphicsMagick executables are located in an unusual place, set the absolute directory name here.