How To Add Related Posts Widget To Blogger With Thumbnails

Now here is a wonderful hack for displaying related posts beneath each of your blog posts along with post thumbnails. The related posts are picked from other posts having same category/label/tag. With this hack many of your readers will remain on your site for longer periods of time when they see related posts of interest. 

Adding the Related Posts to Blogger / Blogspot

Step 1. Log in to your Blogger account and go to Template > Edit HTML

Step 2. Click any where inside the code area and press the CTRL + F Keys.

Step 3. Search below tag that you need to add inside the search box and hit enter to find it.

</head>

Step 4. Copy and paste the below code just before/above the </head> Tag.

<!--Related Posts with thumbnails Scripts and Styles Start-->

<b:if cond='data:blog.pageType == "item"'>

<style type='text/css'>

#related-posts{float:left;width:auto;}

#related-posts a{border-right: 1px dotted #eaeaea;}

#related-posts h4{margin-top: 10px;background:none;font:18px Oswald;padding:3px;color:#999999; text-transform:uppercase;}

#related-posts .related_img {margin:5px;border:2px solid #f2f2f2;object-fit: cover;width:110px;height:100px;-webkit-border-radius: 5px;-moz-border-radius: 5px; border-radius: 5px; }

#related-title {color:#333;text-align:center;text-transform:capitalize;padding: 0px 5px 10px;font-size:12px;width:110px; height: 40px;}

</style>

<script type='text/javascript'>

//<![CDATA[

var relatedTitles=new Array();var relatedTitlesNum=0;var relatedUrls=new Array();var thumburl=new Array();function related_results_labels_thumbs(json){for(var i=0;i<json.feed.entry.length;i++){var entry=json.feed.entry[i];relatedTitles[relatedTitlesNum]=entry.title.$t;try{thumburl[relatedTitlesNum]=entry.gform_foot.url}catch(error){s=entry.content.$t;a=s.indexOf("<img");b=s.indexOf("src=\"",a);c=s.indexOf("\"",b+5);d=s.substr(b+5,c-b-5);if((a!=-1)&&(b!=-1)&&(c!=-1)&&(d!="")){thumburl[relatedTitlesNum]=d}else thumburl[relatedTitlesNum]='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjBfYp5l7WUF7o-2jIqY9sxjDDa1wq3e15rIEDfJZ7TDv0Q7UoL0qNPeqRymsU-aPkCuYZTsntpnPDIF7Ab8E-PHBlTgwtJuV75KQ64nxJcOXmxylmNlVgoxMrVxKKavNVY0Zd2cYdrjm_/s1600/no-thumbnail.png'}if(relatedTitles[relatedTitlesNum].length>35)relatedTitles[relatedTitlesNum]=relatedTitles[relatedTitlesNum].substring(0,35)+"...";for(var k=0;k<entry.link.length;k++){if(entry.link[k].rel=='alternate'){relatedUrls[relatedTitlesNum]=entry.link[k].href;relatedTitlesNum++}}}}function removeRelatedDuplicates_thumbs(){var tmp=new Array(0);var tmp2=new Array(0);var tmp3=new Array(0);for(var i=0;i<relatedUrls.length;i++){if(!contains_thumbs(tmp,relatedUrls[i])){tmp.length+=1;tmp[tmp.length-1]=relatedUrls[i];tmp2.length+=1;tmp3.length+=1;tmp2[tmp2.length-1]=relatedTitles[i];tmp3[tmp3.length-1]=thumburl[i]}}relatedTitles=tmp2;relatedUrls=tmp;thumburl=tmp3}function contains_thumbs(a,e){for(var j=0;j<a.length;j++)if(a[j]==e)return true;return false}function printRelatedLabels_thumbs(){for(var i=0;i<relatedUrls.length;i++){if((relatedUrls[i]==currentposturl)||(!(relatedTitles[i]))){relatedUrls.splice(i,1);relatedTitles.splice(i,1);thumburl.splice(i,1);i--}}var r=Math.floor((relatedTitles.length-1)*Math.random());var i=0;if(relatedTitles.length>0)document.write('<h4>'+relatedpoststitle+'</h4>');document.write('<div style="clear: both;"/>');while(i<relatedTitles.length&&i<20&&i<maxresults){document.write('<a style="text-decoration:none;margin:0 4px 10px 0;float:left;');if(i!=0)document.write('"');else document.write('"');document.write(' href="'+relatedUrls[r]+'"><img class="related_img" src="'+thumburl[r]+'"/><br/><div id="related-title">'+relatedTitles[r]+'</div></a>');if(r<relatedTitles.length-1){r++}else{r=0}i++}document.write('</div>');relatedUrls.splice(0,relatedUrls.length);thumburl.splice(0,thumburl.length);relatedTitles.splice(0,relatedTitles.length)}

//]]>

</script>

</b:if>

<!--Related Posts with thumbnails Scripts and Styles End-->

Note :

1. To change the width and height of thumbnails, modify the 110px and 100px values in red
2. To change the color and size of related post titles, chnage the #333 color value in Blue.
3. Remove the line in violet if you want the related posts to be displayed both in home page and post pages.

Step 5. Find the line below (you will find two timers, but you neet to stop at the second one:

<div class='post-footer'>

Step 6. Just above <div class='post-footer'> paste below code :

<!-- Related Posts with Thumbnails Code Start-->

<b:if cond='data:blog.pageType == "item"'>
<div id='related-posts'>
<b:loop values='data:post.labels' var='label'>
<b:if cond='data:label.isLast != "true"'>
</b:if>
<script expr:src='"/feeds/posts/default/-/" + data:label.name + "?alt=json-in-script&callback=related_results_labels_thumbs&max-results=5"' type='text/javascript'/></b:loop>
<script type='text/javascript'>
var currentposturl="<data:post.url/>";
var maxresults=5;
var relatedpoststitle="<b>Related Posts:</b>";
removeRelatedDuplicates_thumbs();
printRelatedLabels_thumbs();
</script>
</div><div class='clear'/><div style="font-size: 9px;float: right; margin: 5px;"><a  style="font-size: 9px; text-decoration: none;" href="http://helplogger.blogspot.com/2012/03/how-to-add-related-posts-widget-to.html" rel="nofollow" >Related Posts Widget</a></div>
</b:if>

<!-- Related Posts with Thumbnails Code End-->

Note : 

1. change the 5 value from max-results=5 with the number of posts you want to be displayed.
2. if you want to related posts to be displayed on home page too, then remove the b:if lines in violet