You should always put YouTube subscribe button and widget on your website or blog. If you add YouTube subscribe button or widget to your website then chances are that you add more subscribers to your YouTube account, and having a lot of subscribers means that you video will reach to large group of people.
When someone subscribes to your channel it means they have subscribed to your videos and your public activity. Your subscribers will receive updates and stay informed when something new happens on your channel.
YouTube Subscribe Widget
You can embed YouTube subscribe widget on your website or blog to let people subscribe to your YouTube channel with a single click, without having to leave your website. Your readers will not have to go to YouTube to log in or to confirm their subscription. The entire process happens in the widget embed on your website.
To add YouTube Subscribe Widget, you need to embed the code below into the source code of your website or blog.
<iframe id="fr" src="http://www.youtube.com/subscribe_widget?p=Add YouTube Username Here" style="overflow: hidden; height: 105px; width: 300px; border: 0;" scrolling="no" frameBorder="0"></iframe>
YouTube Subscribe Buttons
YouTube subscribe buttons will help you promote your YouTube channel. You can select the button your like to put on your website. Users who click on buttons will be directed to your YouTube channel.
Go here, choose your preferred message in the drop-down menu to see different shapes, sizes and colors. Choose the button you want by clicking on it. This will show the button’s embed code. Copy paste the code into the source code of your website or blog.