Revert "Use the actual image sizes."

This reverts commit 270f48c76b1c399a8a7584367e1fa5a058ed6e27.
Revert "typo"

This reverts commit 7ff379a1bc3c0758e766ab8598ed7e25911a8a92.
Revert "Rudimentary image support"

This reverts commit a3c878c8c91d8c456b9181ee5a9bed74e69aef16.
Revert "Add RMagick back"

This reverts commit 99060d6921f8ef397f46671b8ffe8ab4ab81760b.