Topic: the defaults for Firefox, General, Language & Appearance, Fonts

Develop Firefox Extension Workshop

css - Texts without sub-pixel rendering in Firefox and its variants (Librewolf, Tor, etc) look blurry in LCD monitors - Super User

How to set bigger default font size for firefox? - Community - SitePoint Forums

Grammarly For Firefox: How To Use It On This Browser?

ProWritingAid for Firefox

Auto Text Expanders for Firefox: Reduce Repetitive Typing for Everyday

How to install Chrome extensions on Firefox browser

Could you please help me find an addon for Firefox or some way to copy the link address that is under the mouse cursor, with a keyboard shortcut by pressing 1 or

File:Extension Firefox.png - Wikimedia Commons

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