Download Youtube s Without any program. (Firefox Version)

In first place, open Firefox Browser, and click the little box saying "Firefox" in the left upper corner.



Then, click Add-ons. And then type: sy youtube downloader 6.8 (extension for Mozilla Firefox).
Click the first one, like in the pic. Install it.




Go to a youtube . In the bottom of the there will be a box saying: "Download". Click it.



Ending up, you have to select whatever you want. Audio formats and formats or (with music).And there you go! You can download the youtube s you want, faster and sier with no extra installation.