As of April 2026, the extension frequently results in "zero byte" downloads regardless of the selected quality (480p, 720p, etc.).
If you are experiencing issues with YouTube extensions or playback, these guides offer effective troubleshooting steps and alternative tools: How To Fix YouTube Not Working On Google Chrome (2026) YouTube · MrSoftware
Below is a draft review based on current user sentiment and the technical state of the extension.
Historically, this was one of the simplest Firefox add-ons for quick MP4 and MP3 conversions with a clean, integrated button under the video.
The extension is currently facing significant performance issues as of early 2026. Users frequently report that the tool has stopped working entirely, often downloading files as "zero bytes" or failing to trigger the download button.