how-to-add-twitter-cards-meta-tags-to-blogger
Twitter cards are a kind of optimizations which makes your tweets more living. With twitter cards, you are able to add images, videos and media experiences in your tweets.  You just need to add some Html code in your template and after that when someone tweets your post, the tweet will carry post image or video so making your tweets more living.  Did you know? There are more than 300M monthly active users who send 500M+ Tweets on daily basis and 80% of them operates Twitter account through their personal mobile phones. So, you can’t ignore the power of tweets which not only helps you to get more online followers and fans but it also drives huge traffic to your blogger blogs.  

Types Of Twitter Cards

#1 Summary Card

The summary card contains a title, description, thumbnail and twitter account info. All the info is gathered from the post it is tweeted. 

#2 Summary Card with Large Image

It is the same as a summery card with a little difference of large image unlike small image a in the summery card. The large image is so prominent that such tweet will definitely get a response of users.

#3 App Card

This Twitter Card helps to represent mobile applications on Twitter with direct download facility.

#4 Player Card

This Twitter Card will provide your rich media like video clips and audio streams to users across the globe.

Steps To Add Twitter Summary Card with Large ImageTags To Blogger

Step 1. Log in to your Blogger account, then go to Dashboard > Template > Edit HTML. 
Log in to your Blogger account, then go to Dashboard

Step 2. Click anywhere inside the Template code, then search ( CTRL+F ) for the following code  <b:includable id='post' var='post'> in your blog template editor.
Step-3: Copy and paste these HTML Twitter Cards Meta Tags just after/below <b:includable id='post' var='post'>


Note:

1. Replace @Zerosuniverse (See the second line) with your own twitter @username that represent your blog to show the correct attribution to your tweet card.

2. Replace @zerosuniverse from the third line with the twitter @username of the content writer.

Note: If you have only one twitter account then fill free to use the same in both places to represent your blog owner (publisher) as well as the author (creator) of that blog post.

3. Replace the image URL in 14th line with your own image URL link which will be shown as default feature image.

Once your Twitter Summary Card with Large Image is live, you may test your any blog post with the help of Twitter Card validator. This validator tool will show how the implemented twitter card for your blogger blog will look on Tweet.