If you compare the permalink structure on a WordPress blog to a Blogger blog you’ll notice real quick that Blogger URLs end in “.html” while WordPress URLs don’t. When migrating a blog from Blogger to WordPress that is something that needs to be addressed before the converted site goes live.
You basically have two options for the permalinks when converting a Blogger blog to WordPress: continue using the Blogger-type permalinks, or use a native WordPress permalink format.
Using The Blogger Permalink Style
Continuing with the permalink format that Blogger uses is the easiest; you only have to select the “Month and name” permalink format and add .html to the end of the permalink string. This is illustrated below:
First, select the “Month and name” permalink option in your WordPress permalink settings:
Then edit this permalink string by deleting the trailing slash and inserting “.html” to the end:
And that’s all you have to do to continue using the Blogger-style URL structure in your WordPress blog. If all of your blog post’s permalink slugs have been edited to match the original post slugs you had while using Blogger, then 301 redirects are unnecessary for all of your blog posts.
Native WordPress Permalink Styles
There are many permalink configurations you could use in WordPress, and any one of them you choose for your site (other than the first method described above) will require you to use 301 redirects to keep search engines and visitors happy.
The simplest WordPress permalink option would be to continue using the “Month and name” option, but without the “.html” at the end. This would require you to insert some regex redirect code in your site’s .htaccess file to properly redirect users and search engines to the proper blog post.
Other permalink options are also a possibility, but would require complex redirection methods to ensure everything operates smoothly after the migration.
The Final Word
Unless you have specific requirements in your URL structure after migrating from Blogger to WordPress, it is best to continue using the Blogger-style URLs in your new WordPress site. It is by far the quickest and easiest method, and avoids the hassles you’ll run into trying to radically change the permalinks of your blog posts.