Tactical Misuse

░█▀▀█ █▀▀▄ █▀▀▄ ░░█▀▀█ █▀▀▄░░░░░█▀▀▀ █▀▀▄ ░▀░ ▀▀█▀▀ █▀▀█ █▀▀█░
░█▄▄█ █░░█ █░░█ ▀▀█░░█ █░░█ ░░░░█▀▀▀ █░░█ ▀█▀ ░░█░░ █░░█ █▄▄▀░
░█░░█ ▀▀▀░ ▀▀▀░ ░░▀▀▀▀ ▀░░▀ ░░░░█▄▄▄ ▀▀▀░ ▀▀▀ ░░▀░░ ▀▀▀▀ ▀░▀▀░

this editor lets u create simple Firefox add-ons (aka web extensions) by editing two files the, manifest.json (ur add-on's metadata) && main.js (ur add-on's script).

press the button
open your "Downloads" folder to unzip ur download
in Firefox, open a new tab, enter about:debugging
in left panel menu, click on This Firefox
on the top right, under "Temporary Extensions" click on Load Temporary Add-on...
navigate to ur downloads and choose ur manifest.json
for more info visit how to .. add-ons