Thank you! Extensions are either no-code or use vanilla Javascript. For no-code extensions, the logic is represented in simple base64 encoded JSON. For extens

Thank you! Extensions are either no-code or use vanilla Javascript. For no-code extensions, the logic is represented in simple base64 encoded JSON. For extensions that use Javascript, it's a very simple model where a script is injected at the end using Javascript. You can develop these using just console on any regular desktop browser's JS console and mobile emulator (Firefox, Edge, Chrome, etc.)