LinkScrubber File Upload
If you've already used another link scanner to crawl your site, such as Xenu, simply copy and paste the external link list from the link report into a notepad file and upload it, it's that simple!
Upload a list of external links as a plain text file, one fully formed URL per line, and LinkScrubber will check each link and then give you a summary report broken down by error, Each URL in the plain text file must be on a separate line, completely formed including the HTTP:// such as http://example.com.
See list of HTTP codes and Extended codes for response values