How to download YouTube video without any software

how to download youtube video without any softwre ?

You are use YouTube but don't know how to download it's video. that's why you install many softwares in your computer like Internet Download Manager & YouTube Downloader and so on. but do you know a little more change of youtube videos's URL can download a video ? No, you don't know !
not only video you can download a Mp3 file of YouTube's video.
You have to do this changes in YouTube Videos's URL
add "pwn" before youtube without quotes. like below snapshot

after add "pwn" and when will you press enter then a new website open. as a picture in below.
above is download options and down is video convert to mp3 options

this is a screenshot of youtube video's download website