The other day one of my buddies was venting about how he did not like the default size of the WordPress editor. The default size is 10 lines, but fixing this is very simple. I can imagine how annoying new WordPress users would find this editor, but here are the details about how to fix it: Log in to WordPress. Click on “Settings” and then click on “Writing”. I changed mine to 20 lines of text. The bigger the number you enter under “Size of the post box,” the bigger the post box will be.