gtk-builder-tool: GTK+ 3 Reference Manual

## gtk-builder-tool gtk-builder-tool — GtkBuilder file utility |

## Synopsis

`gtk-builder-tool` [`COMMAND`] [`OPTION`...] `FILE`

## Description

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.

## Commands

The following commands are understood:

`validate` | Validates the .ui file and report errors to stderr.
`simplify` | Simplifies the .ui file by removing properties that are set to their default values and write the resulting XML to stdout, or back to the input file.
`enumerate` | Lists all the named objects that are created in the .ui file.
`preview` | Preview the .ui file. This command accepts options to specify the ID of an object and a .css file to use.

## Simplify Options

The `simplify` command accepts the following options:

`--replace` | Write the content back to the .ui file instead of stdout.

## Preview Options

The `preview` command accepts the following options:

`--id= ID` | The ID of the object to preview. If not specified, gtk-builder-tool will choose a suitable object on its own.
`--css= FILE` | Load style information from the given .css file.