gtk4-image-tool

Information

The info command shows general information about the image, such as its format and color state.

Showing

The show command displays one or more images, side-by-side.

--undecorated

Removes window decorations. This is meant for rendering of exactly the image without any titlebar.

Compare

The compare command compares two images. If any differences are found, the exit code is 1. If the images are identical, it is 0.

--output=FILE

Save the differences as a png image in FILE.

--quiet

Don't write results to stdout.

Conversion

The convert command converts the image to a different format or color state.

--format=FORMAT

Convert to the given format. The supported formats can be listed with --format=list.

--color-state=COLORSTATE

Convert to the given color state. The supported color states can be listed with --format=list.

--cicp=CICP

Convert to a color state that is specified as a cicp tuple. The cicp tuple must be specified as four numbers, separated by /, e.g. 1/13/6/0.

Relabeling

The relabel command changes the color state of an image without conversion. This can be useful to produce wrong color renderings for diagnostics.

--color-state=COLORSTATE

Relabel to the given color state. The supported color states can be listed with --format=list.

--cicp=CICP

Relabel to a color state that is specified as a cicp tuple. The cicp tuple must be specified as four numbers, separated by /, e.g. 1/13/6/0.