The Photo DeDupe tool helps clean up unwanted duplicate photos from your media library. It starts by scanning your entire Mylio Photos Library and will generate a list of files where it detects two or more copies of the same media.
Click the Tools icon
and select Photo DeDupe 
.Photo DeDupe will list all files with one or more duplicates. Scroll through the list and review the differences between duplicate files.
Check the box for the duplicate file(s) you wish to move or delete, or use Auto-Check to have Mylio Photos+ automatically detect the best files and mark the remaining files for removal or deletion.
After reviewing the files, click the Delete Checked or Move Checked button.