Firefox add-ons
One of the most useful aspects of the Firefox web browser is that its architecture lets developers create software add-ons to customise the browser and add many useful features that are not provided as standard (for example, to improve privacy, or provide tools for web developers).
Add-ons which are particularly useful include:
RequestPolicy | Prevents content from third-party sites being loaded on the site that you are visiting (for example buttons and content from social network sites which track your movements around the web, data-gathering adverts, and so on). |
NoScript | Prevents untrusted JavaScript (and other plugins, such as Flash, Java, etc) from running, unless permitted. |
Flashblock | Prevents Flash content from running automatically (unneeded Flash is quite CPU-unfriendly, especially on Linux). This add-on is not needed if you have NoScript, but it is a simpler solution if you do not. |
Firesizer | Lets you resize your browser window to a specific size (useful for web development, or if you’re just finicky..). (In Firefox 31 or newer, The Addon Bar is also required (as this has been removed from Firefox).) |
Neo Diggler | A “go up” arrow for navigating hierarchical web folders more easily. |
It’s All Text | Lets you open textarea editing boxes in an external editor. |
Web Developer | |
Firebug | Web developer debugging and code inspection tool |
Colorzilla | Colour picker tool, useful for editing stylesheets or transferring colour values from and to images. |
Cookie Controller | Lets you quickly set cookie acceptance options for individual websites, delete cookies, etc |