YTB Converter Free is an online site where you can easily download videos from various sites. It provides easy and quick service to it's users. It also provides an ad-free experience to it's worthy users. Here is the link to it:
YTB Converter Free
I have added this site in first rank because it contains some amazing features that impressed me. The first thing about this Youtube Downloader Online is that it is created in PHP Script which means it is fast to open and won't contain a load. It is user-friendly and won't contain advertisements like other sites have. It is available in almost all languages. Moreover, this Instagram Video Indir supports all formats. You can also convert the videos taken from sites into an audio (MP3) file. These are the facts that I personally liked about it. Therefore I recommend you this site for downloading online videos from various sites.