I can load Noto Sans, but not UnDotum, which is distributed by KLDP on Firefox Nightly for Android.

Plus: allows to use local fonts (only you have to type their full names for some reasons).

Minuses:

- constantly randomly breaks: you see "Loading" and nothing else in the extension popup.
- I wish there was a way to add/remove/edit rules inside the extension.

It's super good for allowing us to use local font!
But it truely will stuck on "Loading" randomly, a way to solve this is to open its menu and click on the button on the top right to switch it off, then close its menu, then open its menu again and switch it on, then possibly you will see the drop-down menu for choosing the font.

works great (added Lexend fonts) but does not apply font to iframe content. Please include this in the next revision.

Rather good but I haven't worked out how to use local, non-Google fonts for Android.

Nearly a perfect tool, but as some may have wrote:
1. needs a font-preview (a not full char font looks wired on foreign languages, consider that)
2. need better mass install or uninstall (check fields)
3. needs to show source of the font to install the font directly in the OS (sorry dev-lad, must of us noobs use WINfool and not LINfast ;)
4. option to chage font size

nice but not the job of this Addon

1. option to manipulate the webpage (forcing the font change on hardcoded sites)

2. Needs Payment button for Dev-Support :)

Love this tool. I have to read so much on screen, and making the text an easy sans-serif saves much brain strain!

A preview of the fonts in the 'add fonts' section would be great, if possible, as I have not heard of most of them.

If you could also adjust line spacing for densely packed HTML text, that would improve the tool even more.

Many thanks.

Just what I needed! Thanks. Would be great if you listed the site's font that is being used as default, but otherwise nice work.