Alternatives to Font Changer
Browser extension that lets you change the fonts used on any webpage. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Font Changer
Browser extension that lets you change the fonts used on any webpage.
Replacements
Listings that take over the same core job as Font Changer.
Stylebot
Changes how a website looks without writing CSS.
Stylebot offers point-and-click restyling of fonts, colours and layout, is MIT open source, and syncs styles through the browser's own sync.
Stylus
Applies custom CSS user styles to any website.
Stylus applies custom CSS to any site under GPL-3.0, giving control well beyond fonts, but writing your own styles requires CSS knowledge.
Similar software
Related functionality, not a direct replacement.
Just Read
Reader mode with fully customisable typography and themes.
Reader Mode
Browser extension that strips clutter for distraction-free reading.
Dark Reader
Generates a dark theme for every website, on the fly.
High Contrast
Browser extension that boosts page contrast for easier reading.
Tampermonkey
Userscript manager for running custom scripts on websites.