How to Download YouTube hd Videos on PC without download Any Software

How to Download YouTube Videos on your PC without download Any Software with stp by step

First one is Savefrom.net - 

In this site you can download any video online withoutr doenload any software.

How to use Savefrom.net software

This is a too simple, first one is open www.savefrom.net and paste the url and click for download.
Second one is only add "ss" before youtube.com
example ssyoutube.com
example 2: if i want to download this video url https://www.youtube.com/watch?v=scQqk5ripbc&feature

now you can add "ss" on url:
https://www.ssyoutube.com/watch?v=scQqk5ripbc&feature=youtu.be

2 Way is www.y2mate.com

How to use
This is also too simple, first open this url www.y2mate.com and paste url which you want to download