Vital Blogger Tools - Back-up Your Blog
In the event that you decide to move blogging platforms or Google loses your blog for whatever reason (such as your Blogger blog being locked for too many links), having a backup of your Blogger blog is a good idea.
Previously, the only way to do this would be to download an XML page of your full RSS feed, using this URL:
Don't forget to change "blogname" to the name of your own blog!
After saving the page, you would then be able to keep it for later use or export the RSS feed into another blogging platform, such as WordPress.
If necessary, you can also backup comments:
However things have moved on. Many blogs use Feed-burner, which limits the 1000 posts considerably. As a result, Blogger provides an import and export function.
You can find this in the blog control panel, under Settings. In the Blog Tools section, the options to Import Blog, Export Blog and Delete Blog are available, where Export allows you to save a copy to your PC or laptop and Import Blog allows you to restore a previous export.