Florian TIAR

Did you ever wanted to know how many signs (characters) you type in the content area?
It’s the perfect plugin for online newspaper that need to pay authors by the signs number of their posts.

Count Post Signs

Counts signs (characters and spaces) in real time while you are writing your content. Works for any kind of "post type" out of the box.

edik

Some WordPress functions outputs character entity references. The most of these are not allowed in XHTML. So if your WordPress installation uses the mime type ‘application/xhtml+xml’, the generated sites could have invalid xhtml code and the browser would display the syntax error page.
Convertentity converts all entity references into their corresponding characters with the exception of the references for the following characters: ‘<>&”
Theses references are the only ones which are allowed in XHTML.

Convertentity

Converts all character entity references, which are forbidden in XHTML, into their corresponding characters.

Count Post Signs vs Convertentity