This is a online broken link checker. Just give your address and it will check for broken links. They will check for both internal and external broken links. So if you are pointing to some other blog post and that post is deleted, then it will report it as broken link. After finding a broken link, it shows the location of particular link.
Blogger is moving one step forward to a better blogging platform. The 404 page is appearing when a reader clicks on a link in your blog which do not exist. These links are called broken links. Reducing broken links are the best method to avoid 404 page. Finding broken links is easy with the introduction online and offline broken link checkers. Here is the list of two tools.
This is a Windows software and it runs verification all around your blog pages. This software is free to download. Like the first tool, it checks both internal and external links.
Both tools are excellent in finding broken links. The criteria for selection is whether we want an online tool or an offline tool. There are other tools in internet like Nibbler and Sitebeam which are not free and not easy to test. The above tools are specialized for broken links.