Thanks for your request. I understand your idea, and I considered implementing this feature when I started working on this script, as I often need it myself.

However, after some investigation and a few experiments I found no easy way to do it without breaking the page layout. Probably we could try to simply reduce the page font size if user pinches out while the page already has 100% initial scale, but such behavior will probably confuse majority of users.

I'm glad that you liked it! If you found any issues not listed under "Known issues", feel free to open an issue ticket on the Github page.