Install Video DownloadHelper, spend 5 minutes setting up the companion app, and you'll be downloading YouTube videos in MP4 format directly from your Firefox browser for years to come – just remember to update your plugins monthly. Last updated: 2025. Plugin availability changes rapidly. If the plugin you chose stops working, search for "YouTube downloader" in Firefox Add-ons and look for one with recent update dates (within the last 3 months).
