Here is a professional secret: Many “Firefox plugins” are simply user scripts wrapped in an extension shell. When the standalone plugin breaks, you can run the raw script directly using a userscript manager. This is often more reliable because script developers update faster than extension developers.
Many Firefox users rely on playlist downloader extensions to save YouTube content for offline viewing. However, frequent changes to YouTube’s code can break these plugins. If your playlist downloader stopped working, don’t uninstall it just yet — here’s how to fix it.
Let’s be honest: Standalone Firefox plugins are dying. YouTube is winning the arms race. If the fixes above fail, you need the that will never break.