Client error (4xx)

Error severity, in the Response codes tab

Why it matters

Broken pages waste crawl budget, lose link equity and frustrate users.

How to fix it

Restore the page, or redirect (301) it to the most relevant live page and update internal links.

How Crawlune finds it

Crawlune flags Client error (4xx) 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.