[romdev]

I personally will use Bookmarklets rather than Userscripts to fulfill the same purpose. Bookmarklets work even in locked-down browsers including Edge (bookmarks bar, not favorites sidebar).

The one I use most often is modelled after a similar one - after you fill out a web form you can capture your entries and restore them with a single click:

https://github.com/mossrich/Bookmarklets/blob/master/Bookmar...

[zzo38computer]

Capturing and restoring form entries is something that probably would be useful as an actual browser extension (or a built-in feature to some browser), to add a menu or a keyboard command to be able to specify file names to save and recall form data.