Duplicate Media Finder uses highlighting in two distinct contexts:

1) Manual highlighting based on user choices

In this case, the user decides which duplicates to highlight.

Typical uses:

• Permanently lock certain selections to prevent accidental deselection.
• Visually emphasize specific duplicates to make them easier to spot.

In the example below, color 0 was used to highlight black-and-white images, while color 1 was used for saturated images.

You can assign up to 12 different colors to your selections, which corresponds to 12 distinct selection memories.

To manually highlight duplicates:

1. Select the duplicates you want to highlight
2. Right-click and choose Highlight -> Selection -> Color X

2) Automatic highlighting based on a criterion

In this mode, Duplicate Media Finder determines and applies the highlight color (from the 12 available) based on a criterion chosen by the user. Note: color assignment only applies within the same group of duplicates.

In our example, to distinguish files by extension (.jpg, .tif, .png), use: Highlight->Same extension.

To improve readability, you can group duplicates by color: Highlight->Group. In our example, duplicates with the same extension will be grouped and displayed side by side.

How to manage highlighting?

The following table lists the main actions you can perform with highlighting. Using keyboard shortcuts makes it especially easy and efficient to use.

Action	Context Menu	Shortcuts (Numeric Keypad)
Highlight duplicates	Selection + Highlight -> Color X	Selection + [0] -> [9]
Clear highlighting	Highlight -> Selection -> Cancel	[/]
Select a highlight color	Select -> Highlighting -> Color X	Ctrl + [0] -> [9]
Select all highlight colors	Select -> Highlighting -> All	Ctrl + [*]
Group duplicates side by side according to their color	Highlight -> Group	[*]