Server error (5xx)

Error severity, in the Response codes tab

Why it matters

Server errors can cause search engines to drop pages from the index if they persist.

How to fix it

Investigate server logs for the failing URLs and fix the application or infrastructure error.

How Crawlune finds it

Crawlune flags Server error (5xx) automatically on every crawl and lists the affected URLs under the Response codes tab, where you can filter, inspect each page and export the list to CSV. The free version crawls up to 550 URLs with every check enabled.