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# Personalize

## View

### Use dark theme / light theme / detect automatically

With this option the appearance of the application can be changed. You can switch between light and dark mode. The option for automatic detection is based on your current Windows setting and automatically adapts the appearance of TreeSize to it.

### Language

Select the language that is used for TreeSize’s user interface.

### File and Folder Options

#### Determine icons based on file extension

If this option is set, you will see the default icon for a file of this extension type in the search result list.

#### Show compress files/folder in blue

If this option is set, NTFS compressed files/folder will appear in blue color in the search result list.

#### Check results by default

If this boxed is checked, all results in the list will be automatically checked so processing additional steps (like Export, Move items,etc) can be performed with one click.

#### Show long tooltips

If this option is active, a tooltip window with detailed information will be shown if the mouse cursor hovers over a file or folder for a while.

### Date/Time Format

Use the following date/time format, e.g. for “Last Access”:

The date/time format that is used by TreeSize in related columns like “Last Access”, “Last Change”, or “Creation Date” can be defined here. Available formats are date, date+time (without seconds), and date+time (with seconds).

### Username Format

Format for the username appearance if displayed in search result list or export files.

Either just the username is displayed or user name including the related Active Directory domain where user belongs to.

### Notifications

If this option is enabled, TreeSize will play a notification sound, when the search has finished.

If TreeSize is minimized, when the search finishes, it will also show a notification in the Windows notification center, which includes a summary of the search that was just performed and the results that were found (Only supported in Windows 8 and higher).

## File Groups

This page allows to modify the different file type groups that are available in the file search and which file extensions should be assigned to which of the different groups.

Each of these groups can be used as a search pattern in the custom search. The input field “Pattern” can be used as a dropdown, to select one of the available file type groups.

More information, about how to customize these groups, can be found in the chapter File groups of the TreeSize main module. Both the file search and the main module share the same file type groups, so any information that you may have gathered with the help of the Extensions view can be further analyzed with the appropriate file search filter.

## Templates

This page allows to modify the list of existing templates. You can change their order, or delete templates that you don’t need.

Select one or more templates from the list and use the buttons “Up”, “Down”, or “Delete” to customize the list to your liking.