Worth noting: Requires "Access [to] your data for all websites"

On the add-on site, it fortunately does note why:

> Privacy: Markdown Here accesses and modifies web content when you activate it. It can, in theory, access other web content, but does not. It also makes no Internet requests whatsoever. Your data is modified when and where you choose, and does not leave your browser.

Is this a limitation of WebExtension APIs that necessitate this? Perhaps there is an opportunity for more granular WebExtension APIs.