My Duplicate File Finder: Find and Delete Duplicates Fast!
August 11, 2022

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General Help

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General Questions

Advanced Features


General Questions

How to Use My Duplicate File Finder

My Duplicate File Finder lets you easily find duplicate files on your PC. When using My Duplicate File Finder, you have three basic options: 1) what kind of duplicates do you want to find, 2) where do you want look for duplicates, and 3) and what criteria determine what is a duplicate. For #1, you can do a basic search, a music search, an image search, or an advanced search. Try a basic search at first to just see how the program works. It will do a basic search for anything that looks like a duplicate in "My Documents." For #2, you can use the location list on the left side of the criteria tab to select which folders, disks, or drives My Duplicate File Finder will search. For #3, you can customize the search options on the right side of the criteria tab to select which attributes define a duplicate (only available for Music, Image, and Custom searches). If you want the file name to match, check that box. If you want the date created to match, use that option, etc. You can find additional information below on the advanced matching options.

About the Free Trial

My Duplicate File Finder has a free trial so you can try out our program before you buy it. We offer 30 free actions, which lets you rename, move, or delete 30 duplicate files. The free trial includes unlimited searches and all the options and features available in the registered version.

How to Uninstall My Duplicate File Finder

My Duplicate File Finder is easy to uninstall. Just open the program, click "Settings & Help," and click "Uninstall Program." You can also uninstall through the Windows Add/Remove Programs interface.

How to Fix Interface Problems

If the My Duplicate File Finder interface doesn't fit your screen or buttons are cut off or missing, please make change your Windows DPI settings. Click Start > Type DPI > Select "Make text and other items larger or smaller" > Select "Set custom text size (DPI)" > Choose 100% and check "Use Windows XP style DPI scaling."

Advanced Features

About Search Match Options

Duplicate Match Options

Search Options: For Music, Image, and Custom searches, you can set the options which define what is a duplicate file. Just check the box for each item that needs to be matched. For example, if it you want to find duplicates with the same name and date, check "Match Name" and "Match Date." Some of these criteria have advanced options available in the "Options" dialogue box. Also, you must have a minimum number of criteria selected to find duplicates. If the "Find Duplicates" button is gray, try adding additional criteria.

Mix and Match: select the combination of options you want to accurately find the duplicate files you are looking for. You may want to do several different searches to find all possibly duplicates. For example, if you are searching your music collection, you might first find all songs with the same name, date, and size for basic duplicates, then you might also search for songs with a metadata name match (since some music will have a different size if it was recorded with a different bit rate).

About File Type Matching

File Type Matching

File Type Options: You can select which types of files My Duplicate File Finder will scan for duplicates. You can search all files or just music, images, etc. You can also create a custom set if you need to search for a file type not listed or in a custom group of file types.

Creating a Custom Set: To search a custom set of file types, check the "Other" box and enter each file type extension in a comma separated list. If you only want to search one type of file, just enter one file type. Also, you don't need to include the dot "." before the file type.

About Binary Matching

Binary matching will compare the actual ones and zeros inside the file. Two files could be exactly identical, but have different names and dates. Binary matching will let you find these duplicates. Binary matching is also more accurate than checksum and hash comparisons, as it compares the file byte by byte.

About Metadata Matching

Matching Metadata

Music and video files often contain metadata which contains additional information about the song or video. Metadata can include Artist, Title, Album, etc. The metadata options in the music search lets you specify which metadata attributes you want to compare. For example, you might have two songs called Track1.mp3 (which are the same song) but one is 3.8MB (recorded at 256mbps) and one is 2.5MB (recorded at 128mbps). Comparing the metadata will reveal that these are both the same song if the metadata on both songs correctly identifies the artist and title.

Using Patterns and Wildcards

Using Patterns and Wildcards

My Duplicate File Finder lets you use patterns or wildcards to search for duplicate with specific file names. You can search for files that start with a specific string (like "photoshoot22-"). You can search for files that end with a specific string (like "-23K9J5"). Or you can use a wildcard to search for an advanced match (like "image-*-2011"). Just use the asterisk "*" character to specify the part of the filename which changes. This wildcard search ("image-*-2011") would find duplicate copies of image-14-2011.jpg and image-14edited-2011.jpg.

What are Hidden Files?

Windows has many hidden system files which could potentially be found as duplicates. For this reason, we don't recommend searching for hidden duplicates. But if need to find hidden duplicates, simply check "Include Hidden Files" to also search these hidden files too.