This is an advanced tool for searching sites for broken links. It works like a robot of a search engine (Googlebot, MSNBot, WISENutbot, Alexa, etc.). You specify the file to start checking from and Fast Link Checker goes through all pages this file has links to until it checks all links on the site. If Link Checker finds a broken link, it shows its position in the document, the cause why it does not work and a hint how it can be fixed.