What does mean “clean my WordPress database”?

As you use WordPress, your database accumulates a lot of extra data such as revisions, spam comments, trashed comments, transients, etc. that make your site sluggish and bloated. Cleaning your WordPress database consists of removing this unnecessary data. This operation will reduce the size of your database and improve efficiency when accessing tables. In addition, your backup files will be quicker and smaller.

Use our plugin Advanced Database Cleaner to clean-up your WP database