Hi ccdoub!

Hmm, I guess it would be possible to create such a web extension.
It would have to remove all script tags and also all event listeners but certainly doable.

However, you can already pause JavaScript execution in Firefox natively.
Simply open the dev console and click on the pause icon in the tab "Debugger" -> JavaScript execution is paused :)

Therefor a web extension is probably not necessary to achieve this.
Thanks for your review though!

David