The visual editor is nice when pages and posts are simple, but when you try to add special text such as php code to a page then the visual editor oftentimes has to be deactivated to edit the page. This plug-in allows you to set which posts should not use the visual editor by setting a custom field ‘deactivate_visual_editor’ to true. This allows the visual editor to be deactivated for the given post/page, but remain active for all others.

Deactivate Visual Editor

A simple plugin-in that deactivates the visual editor for a specific page or post by a custom field set by the author.

Nikolay Bachiyski

Visual Editor Font Size allows you to change the font in the visual editor write field.
Once you install a plugin, you will be able to increase and decrease the font size via a 
box on the write screen.
This setting doesn’t affect the font size your users will see. It affects only you.

Visual Editor Font Size

Allows you to change the font size of the visual editor

Deactivate Visual Editor vs Visual Editor Font Size