i-DeClone can find these clones quickly and easily, with default scan options. It checks for name, size and date modified properties, and if all 3 match, then the files are likely duplicate — it doesn't even have to check file contents!
Any kind of document
Step by step instructions:
➀ Connect devices to scanIf you want to scan external disks, connect them, or just scan your PC folder contents. Click on Start scan toolbar button to begin. Then click Start new project to setup scan settings from scratch.
➁ Scan options
If you have any particular category of files in mind, say Photos, then select it, or search for All file types to find any kind of duplicate file, whatever its file extension.
For Folders to search use This PC, which will search your entire computer and any attached devices like phones or USB disks. Click on Add button or use Search everywhere from Save button menu to add ThisPC folder.
Tick the option find exact duplicates only, as that's what we want. Leave everything else to its default setting (if you check Advanced property page you will see that file properties Name, Size and Date modified are going to be used for comparing files).
All set, click Start scan and wait for the results.
➂ Mark and remove duplicatesUse the checkboxes to mark duplicate items for removal, then remove them to clean up space. Use Mark wizard to choose the originals (which will be kept) depending e.g. on their folder location. Finally click Clean-up button to start deleting the marked duplicates. This is a standard procedure explained in detail in the documentation