This page lets you customize the appearance of the Toolbox, by deciding whether the three “context information” areas should be shown at the bottom.
Appearance
You can click-drag-and-drop an image from a file browser into this area to open it.
Controls whether the color area on the left (2) appears in the Toolbox.
Controls whether the area in the center (3), with the brush, pattern, and gradient icons, appears in the Toolbox.
Controls whether a preview of the currently active image appears on the right (4).
Since GIMP-2.10.18, tools can be grouped in the toolbox (see Section 1.2, “Tool Icons”).
Tools configuration
In this list, tools with an eye are present in the Toolbox. Tools that have no eye can be added to the Toolbox by clicking the corresponding checkbox.
Since GIMP-2.10.18, tools are grouped. You can:
Move groups by using drag-and-drop or the arrow buttons at the bottom of the dialog.
Create a new group by using the at the bottom of the dialog. This tool group is created empty.
Changes take effect immediately.