Finder integration

The VisualDiffer app doesn’t directly offer a way to integrate with Finder, but you can use the Automator script available on VisualDiffer Hub.
Download the script from GitHub, unzip it and double-click the workflow file to install.
How to use it is described here.

Use as External Diff Tool

VisualDiffer can be integrated with many applications thanks to the command-line utility visdiff.

SourceTree

Set ‘Visual Diff Tool’ to: ‘Other’
Set ‘Diff Command’ to: /Applications/VisualDiffer.app/Contents/Resources/visdiff
Set Arguments to: $LOCAL $REMOTE

VisualDiffer always prompts for a file open panel, why?

Starting from version 1.4.2 VisualDiffer fully complies with Apple sandboxing rules and this introduced a different way to access the file system.

Open existing vdiff sessions

Saved vdiff sessions need to be aware of the sandbox, so the first time you open them you should be prompted to select the left and right folders/files. Then you need to re-save the session so VisualDiffer stores the paths as trusted and no longer shows the file-open panel.

Integration with other applications

If VisualDiffer is used as an external diff tool you may need to manually add paths as trusted; this is documented on Trusted Paths.

Customize the file date/time format in Folder Differ View

Since version 1.4.4 or above

By default the Folder Differ View shows for files and folders a long format containing seconds; currently this value can’t be changed from the user interface but you can set it from the terminal.

Change format

Open the terminal application and type:

defaults write com.visualdiffer folderViewDateFormat HHmmss

The example above sets the format to show only the time (without date); format patterns can be found at Unicode Technical Standard #35.

Restore default value

If you want to restore the default value, open terminal and type:

defaults delete com.visualdiffer folderViewDateFormat