Online Broken Link Checker

Summary of the features
Free broken link checker.
Scans webpages for dead links.
Unlimited number of pages*.
Finds both internal and external (outgoing) bad links.
Checks for broken links online.
Detects all sorts of broken links.
Reports location of each broken link in your HTML code!
Shows 404 and other HTTP response codes - for every broken link
*free version has a limit of 3,000 pages