Favorite Must Have Firefox add-ons or extensions
Firefox Extensions for Web Development
Clear Cache Button: This is an easy way to clear your cache when developing.
ColorZilla: This firefox extension for colors is amazing, it lets you use the eyedropper anywhere on a site and it gets that exact color, not just what the csssays. You can get any color from an image, background, etc. You can then get that color in several forms of Hex or RGB.
CSSViewer: With one click this firefox extension provides details about the css in a site upon hover of any of the page elements. This comes in handy when
you need to see what font a certain section is using or what the properties of a certain div are.
Firebug: Incredibly useful for too many reasons to list, if you are a web developer in any technology, download it.
Better Gmail 2: This firefox extension adds features such as row highlighting on hover, opening “mailto:” links in gmail instead of your default mail program, custom attachment icons and several others. The mailto link modification is probably the best since gmail is my primary mail client now and it’s much easier than having to copy and paste an email address. The custom attachment icon just changes any email that has an attachment from the basic paperclip to anything from a pdf icon to a word document icon.
Measure it: Firefox extension that lets you measure anything on a web page instead of guessing.
Table 2 Clipboard: If you need to pull down data from a table on a site in firefox to put into an excel file or into another site this plugin makes it extremely simple. Hold
ctrl and then click and drag across the cells you want, then let go and right click and “copy selected cells” or “copy entire table” and then paste into wherever you need.
Web Developer: A good partner in crime with firebug, web developer allows you to do different things such as disabling javascript, disable images, resize
to a specific browser size, see all colors used on a site, display id and class information, view the generated source from ajax calls, edit html and css on the fly (firebug can do this too), display all type of information about a site, look at the response headers for a page.
Social Networking Firefox Extensions
del.icio.us (delicious) Bookmarks: If you use delicious, this is a must. It’s a much faster way to view bookmarks and post them since it has a built in sidebar.
Other Firefox Extensions
Download Embedded: Allows you to download embedded content in a page with firefox. Types are mp3, flash, quicktime. This doesn’t work with youtube and other video sites though. There’s another plugin around for that.
Download Statusbar: Instead of firefox popping up your downloads window it shows them in the status bar, when they are complete you can set them to go away after a certain amount of time. It’s much better than having an annoying box pop up when you are downloading a small file such as .js or an image.
Quick Restart: Useful for when you install a plugin or theme and you didn’t want to restart when it prompted you. When firefox opens back up all of your tabs will load up again from your previous session as well. The hotkey for restarting firefox is ctrl-alt-r.
ScribeFire (Blog publishing firefox extension): This extension is what I am writing this blog post in. It is a much faster and efficient way to be able to post to multiple blogs or a single blog. Supported blog types for this firefox extension are wordpress, movableType, Drupal, textpattern, roller, metaweblog api, and blogger.
Secure Login: If you are used to opera’s wand feature this one is a decent replacement. Although it only deals with login information and integrates with your saved passwords in firefox. As far as i know there isn’t any functionality built in to fill out forms like in opera.
Tiny Menu: This firefox addon condenses your file menu into a single menu button. With this addon I now only use one row at the top of firefox which saves a lot of space on smaller screens.
Vimperator: I love this plugin, just only at certain times. What the plugin does is give you very powerful keyboard shortcuts like Vim the text editor. Currently it doesn’t work to well with flash text input and some elements that obtain focus through javascript or are javascript intensive.
