When you are maintaining your website, it is important that you check all of the links on your site to make sure they work. This should be a weekly task, and it is very important for keeping your website professional and making sure your visitors find the information they are looking for. If you do not have the time to check all of the links manually, there are free tools that can do it for you. These tools are available on many websites, so I will just mention a few here.
1. W3 Validator