QR Code Image Generator
Create a QR code of the selected text, current url or hyperlink. Also possible to create a QR Code from free text within Firefox. Now with UTF8 support.
19,184 users
User-Agent Switcher
Quickly and easily switch between popular user-agent strings.
71,046 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1,108,840 users
Font Finder (revived)
An easy-to-use font inspector to get CSS styles of the selected element
19,416 users
TableTools2 - Copy/Sort/Chart/Filter Table&More!
Does everything for an HTML table: Copy (table/row/column/cell), Sort (multi-column), Search (regex, range operations ...), Filter, Chart, Statistics, Rearrange, Combine/Compare. To use: Right click in a real HTML table for the "tabletools2" option.
8,188 users
Classic Toolbar Buttons [Fx45-56][Tb24-58]
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions. Beta builds on versions page!
20,899 users
Octotree
Add-on to display GitHub code in tree format
9,229 users
NewScrollbars (aka NoiaScrollbars) [Fx/Tb 10-56]
The "NewScrollbars"-extension replaces default scrollbars of Firefox and Thunderbird with colorized ones (partly) known from "Noia themes". [ not compatible with Firefox / Thunderbird 57+ ]
10,350 users
Dark Night Mode
It is a universal night mode for the entire Internet. It uses a special algorithm to automatically change the colors of the websites you visit into dark mode so that you can browse without straining your eyes, especially at night.
2,351 users
Jitsi : partage d'écran
Extension de partage d'écran sur l'application JITSI utilisée par le RIE
10,106 users
DevPrefs
Automatically sets all preferences for Firefox addon developer production environment.
7,481 users
ModHeader
Add and modify the HTTP request headers and response headers. ** Features ** - Add / modify / remove request headers and response headers - Multi-profile support - Filtering based on URL - Export, import, cloud backup
945 users