This is probably my longest-used add-on over the decades I've been using Firefox. It's always the quickest and easiest way to get the information you need about a page—from anchor links to content sizes and more.

rainbows are all over ext

too perfect for a free extention

hello claw gaming ghostReconBreakpoint

Amazing tool!

very useful thing for me

A good app. That i use for working. Thanks a lot.