Font Contrast only applies Bold text on most sites only, nothing else.

None of the contrast, color, brightness, or opacity features work. Websites especially those who use closed shadow‑DOM components, CSS variables for all text colors, and !important rules that the extension can’t override.

The result is consistent: bold works, everything else does nothing. This extension has many limitations at the root level and in how the extension handles shadow‑DOM and variable‑based color systems. A fix would require support for rewriting CSS variables and penetrating closed shadow roots

Instructions are written by an NPC written for an AI or bot. Extension doesn't play nice if you have other extensions like uBlock or VPNs and more. It needs a major update.

You need to know how to tweak your settings. Otherwise, the default settings don't do much. It needs a toggle to see changes with and without as you change the settings.

It's funny how there are many Chromium extensions that do this job well, but only this one claims to adjust the contrast fonts. Clearly Mozilla's marketshare is dropping fast and developers want no part of it.

If F. Fusco, the developers spends a bit more time providing instructions and updating his guide which is not current it could be a "game changer". But it looks like it's abandoned.

If I select blacklist, it resets zoom level. So I adjust zoom level, and it deselects blacklist. Can't really change anything at all.

doesn't work

Breaks Google Calendar on my Asus tablet using Firefox 89.0