You can configure Duplicate Photo Cleaner settings to make your search more efficient. To do that, go to Duplicate Photo Cleaner Settings.
The File Search tab of the Settings window lets you select the image formats to scan for and set the similarity threshold. By default the similarity level is set to 50%. Moving the slider to 100% will make the program find only exact duplicates.

- Skip hidden objects to prevent the program from scanning hidden files
- Image Rotation
- Scan subdirectories to include all images in subfolders
- Use grayscale comparison to disregard color changes in all photos and thus broaden the search results
- Enable multithreaded processing for faster search
- Use alternative matching algorithm to enhance the search and get more accurate results
The Preferences tab lets you configure Duplicate Photo Cleaner to fit your needs. You can select the language of the program (English, German, Spanish, French, Japanese, Serbian, Portuguese, Chinese, Turkish or Russian), configure confirmation messages and how the program behaves on startup, and speed up large image preview in Tree/Table modes.

You can also configure Duplicate Photo Cleaner to create and store logs of your scans. To do that, navigate to the Logging tab and enable logging. You can set the program to delete old log files automatically.

And last but not least, you can add some folders to the Ignore List. This will help you protect your important files from accidental deletion. System folders are added to the Ignore List by default and it’s not recommended to delete them from the Ignore List.
To add folders to the Ignore List, go to the Ignore List tab and click on Add to start adding folders. You can remove individual folders by selecting a folder and clicking on the Remove button, or you can clear all folders by clicking on the Clear button.
