Appreciate the words, and questions are absolutely fine!

1. Sadly, custom fonts are not that straightforward on mobile. Android browsers don't expose system fonts to extensions the same way desktop does, where typing the font name is usually enough.

2. Google Fonts is a great suggestion, but it would require network requests, and I prioritized keeping the extension local, fast & simple.

3. Font sizing is tricky to add without breaking layouts, since many websites use custom sizes and forcing one would override them. The browser's zoom is the most universal solution for this.

Thanks!