Broken links are bad for user experience and, to a lesser extent, SEO. They make it harder for humans to use your site and robots to crawl your site. They’re difficult to find manually…but with the right tool (Broken Link Checker), you can instantly sniff out every single broken link on your WordPress site.
While the plugin does have some advanced settings, for most sites, you can just install it and head to Tools.
You can hover over each link to quickly edit it or remove the link.
Because some people say that Broken Link Checker can slow down the wp-admin dashboard, I recommend only enabling the plugin specifically when you want to check for broken links.