This is the list of best free Mozilla Firefox plugins that a webdesigner or developer must have.
Although you do not need them all together, read the list and choose the Firefox plugins that you think you mostly like. You can install any of these free Mozila addons and if you feel that you need them only from time to time, just deactivate them from the Firefox menu. This is also a good option in order to make your browser run or start faster.
CSSMate – Firefox extension to edit CSS files.
CSS validator – Check the validity of your webpage using this CSS validator extension.
CSSViewer – See the CSS properties of page elements with this Firefox extension.
HTML Validator – Cool mmozilla extension to validate web pages with HTML standards of W3C.
ColorZilla – A nice free extension for web designers and developers. Colorzilla helps users to select colors which can be adjusted and put in any other program.
Measureit – Users can calculate the measurement specifications of tables, paragraphs on internet, from Firefox
Screen grab – Capture screenshot of any webpage and save it as an image file with this extension.
Web Developer – Add a menu of various web development tools with web developer extension.