Originally published on the Merlonix blog . A broken-link checker does one well-defined thing: it walks the <a href> links on a page, fetches each target, and flags the ones that come back wrong — a 4xx , a 5xx , a timeout, a connection that never opens. That answers a real question: which links point at something that isn't there. Run a clean scan and you get a green report and a reasonable feeling that the page is healthy. But "every link resolves" and "this page works in a...