To use these add-ons, you'll need to download Firefox.

Log in
Add-on icon

Reviews for Web Developer

Web Developer by chrispederick

4.3 Stars out of 5
5
327
4
70
3
25
2
22
1
40
Review by Firefox user 13542173
by Firefox user 13542173, 7 years ago
Great add-on, if you're using a pre-Quantum Firefox! Thanks for the instructions on how to downgrade FF.