Font Inspector (WebExtension) – Get this Extension for 🦊 Firefox

Download Font Inspector (WebExtension) for Firefox. Click on any element to get the font info in a page popup

Increase code font size in firefox developer tool - Stack Overflow

Treetop – Get this Extension for 🦊 Firefox (en-US)

Form History Control – Get this Extension for 🦊 Firefox (en-US)

Motrix WebExtension – Get this Extension for 🦊 Firefox (en-US)

Link Text and Location Copier – Get this Extension for 🦊 Firefox

Developing browser extensions with Visual Studio Code — Teletype

Link History Shortcuts – Get this Extension for 🦊 Firefox (en-US)

HTTP Version Indicator – Get this Extension for 🦊 Firefox (en-US)

Unhide Nodes – Get this Extension for 🦊 Firefox (en-GB)

Developing browser extensions with Visual Studio Code — Teletype