How To Redirect Blogspot .in URL To .com URL

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1- Go to Blogger Dashboard > Design > Edit HTML.
2- Take a backup/download your template.
3- Find for </head> tag.
4- Add below piece of JavaScript code just above </head> tag.

<script type="text/javascript">
var blog = document.location.hostname;
var slug = document.location.pathname;
var ctld = blog.substr(blog.lastIndexOf("."));
if (ctld != ".com") {
var ncr = "http://" + blog.substr(0, blog.indexOf("."));
ncr += ".blogspot.com/ncr" + slug;
window.location.replace(ncr);
}
</script>
If you are big fan of blogspot, then this gonna be very helpful for you.