adam-p
Reduce permissions scope
There is no need for this plugin to "read and change data on all [a user's visited] web sites." At the very least, it should be limited to the web sites it supports, which if I'm not mistaken is a half dozen or so known domains.
Except that MDH works in a surprising number (and variable number) of places, so it's not possible to enumerate them. See: https://github.com/adam-p/markdown-here/wiki/Compatibility
However, I keep meaning to look into whether there's some mechanism where the extension can request permissions to a site when the user clicks the button. It's not like MDH needs access before then. So I'm leaving this issue open.
The permission scope has been reduced down to approximately nothing. It only takes gets permission to act when you activate MDH (button, hotkey, context menu). The change will be in the next release.
See: e00d005299922198aef968e0cd42b275525c20a6