Add Author Avatar Beside Post Title in Blogger
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The widget is fully automated so if you change your profile pic then the changes you want will take place.
Step 1 : Adding CSS
First go to Blog Title → Template → Edit HTML. Press Ctrl + F. Expand <b:skin>...</b:skin> if it is not expanded. Type ]]></b:skin> in search box and press enter key. [As per the new HTML editor]
Add the below given code just above ]]></b:skin>
.avatar-author{float:left;margin-right:10px;border:0;border-radius:50%;padding:0;width:30px;height:30px}
Step 2 : Adding Script
Find </head> and add the below code just above </head>
<script>
//<![CDATA[
function av(a){var b=a.entry.author[0];c=b.name.$t;d=b.gd$image.src.replace(/\/s[0-9]+(-*c*)\//,'/s30$1/');document.write('<img alt="'+c+'" class="avatar-author" src="'+d+'" title="'+c+'"/>')}
//]]>
</script>
Step 3 : Final Configuration
Finally search for <b:if cond='data:post.title'> and add the below code just above it.
Note : There may be more than 1 <b:if cond='data:post.title'> data card so be sure to add the below code above the correct data card.
<script expr:src='"/feeds/posts/default/" + data:post.id + "?alt=json-in-script&amp;callback=av"'/>
After adding this code save the template. You are done now. Now you can see rounded author avatar beside every post title in your Blogger blog.