WordPress plugins can only be deleted properly if they are deleted from both the web files and the database. Both require space and capacity. Inadequate deletion can lead to program conflicts and more time later on. You should invest a little time in backing up and deleting from the database. It is definitely worth it. However, you will only see the real benefit once things have gone wrong and you have omitted the backup or deletion from the database.
Delete WordPress plugins correctly - backup
Before you delete anything, you should make a comprehensive backup. Sometimes you miss the deleted Plugin quickly. When deleting the plugin via the BackendThis may not be so bad, as it can be reinstalled quickly. However, if you make a mistake when deleting from the database and accidentally delete the wrong table, this can have a significant impact on the website. You should therefore always make a backup.
Plugin Recommendation: "Updraft Plus"
Delete WordPress plugins correctly - Web files
You can't do much wrong when deleting the plugin from the web directory. You have to delete the Plugin deactivate it under Plugins/Manage and delete it in the next step.
Only that Plugin itself can make a mistake here, because some plugins delete themselves here only in the web folder and not in the database. If you do not use so many plugins and in particular do not try plugins that are aimed at the same function to find the best, you probably have no problem here if you do nothing else. However, if you often feel the need to test plugins or to spice up your websites with plugins, you should check the Plugin also delete from the database.
Delete WordPress plugins correctly - Database
The WordPress database can be accessed via the PHPMYADMIN tool. Your provider will usually give you a website where you can access this program and therefore the database. You then enter your database password there and can delete the corresponding entries.
The database tables of the plugins have mostly the same or a slightly modified name. Therefore you should look at the deleted Plugin remember, write it down if necessary and then search for a corresponding database table in PHPMYADMIN.
Delete plugins in the database
By clicking on the red cross in the table and then confirming with OK, you can delete the corresponding Plugin now complete. Always provided that the Plugin has not already deleted this table in advance when deleting it in the Backend deleted as well, as is the case with this Plugin fortunately, this is the case. In this case, one would not need an additional table here for the Plugin find and can be pleased that the programmer of the plugin has worked cleanly and has completely limited the deletion process to Backend-level (=administration level) has initiated.
So if you want to delete WordPress plugins correctly, you should always check the database and never forget the backup.
What experiences have you had with deleting WordPress plugins?