You may have noticed that wordpress keep revisions of your old posts.
These revisions can be useful if you want to go back to an older version of a post. But if you are sure that you no longer need those old versions of post than it’s best to get rid of them.
Deleting the old posts will give you precious space which you can use for posting new articles. Also it will make your database querying fast.
Here we will discuss about how to delete old revisions.