Xenu is a really useful tool, used to help you identify and fix the broken links to your webpage. Xenu is the tool you need to prevent broken links and 404s happening on your site. It features a simple interface, the ability to check and re-check broken links until they are fixed, and can quickly and efficiently detect and report any of the broken links on your site. It is also easy to use, you just enter your siteƕs URL and let Xenu do all of the work.