|  |  |  |  | 
| gtk-builder-toolgtk-builder-tool — GtkBuilder file utility | 
gtk-builder-tool  [COMMAND] [OPTION...]  FILE 
gtk-builder-tool can perform various operations on GtkBuilder .ui files.
You should always test the modified .ui files produced by gtk-builder-tool before using them in production.
The following commands are understood:
| 
 | Validates the .ui file and report errors to stderr. | 
| 
 | Simplifies the .ui file by removing properties that are set to their default values and write the resulting XML to stdout. | 
| 
 | Lists all the named objects that are created in the .ui file. | 
| 
 | Preview the .ui file. This command accepts options to specify the ID of an object and a .css file to use. |