To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Rated 5 out of 5 stars
I love this plugin! Great tool for webmasters to measure available space in a web page. (never had any problems!)This review is for a previous version of the add-on (0.4.10.1-signed).