Most users find success using "Title and Author" with the "Fuzzy" match enabled. If you want a perfect match, use "Binary Compare."
If you want to keep one record but combine the formats (e.g., merging an EPUB and a PDF version), use Calibre's feature ( M ). calibre find duplicates plugin download
Calibre will prompt you to restart the application to finalize the installation. Setting Up the Plugin Most users find success using "Title and Author"
