Mozilla hints at unlocking more add-ons for Firefox for Android - gHacks Tech News

Theme Font & Size Changer – Get this Extension for 🦊 Firefox (en-US)

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

How to Install Extensions in Firefox

Bold Fonts since major FF update : r/firefox

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

Top 20 Essential Firefox Add-ons for Web Designers

Helperbird for Firefox - Powerful Accessibility Tools for Firefox - Helperbird

Manage your extensions using the extensions button in the toolbar

How to add an Extension button to the Firefox toolbar

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