Broken links hurt user experience and SEO. Polypane's Outline panel automatically checks all links on a page and reports their HTTP status codes, flagging 4xx errors (broken links), 5xx server errors, and 3xx redirects with distinct visual indicators. Beyond status codes, it also warns about non-HTTPS links, empty href attributes, placeholder values, non-descriptive link text, internal anchor links with no matching element, and inconsistent link naming. The post includes a primer on common HTTP status codes in the 2xx–5xx range to help developers understand what each result means and how to prioritize fixes.
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Types of broken linksBroken links in the Outline panelOther issues with linksTry it for yourself2 Impressions