Error · Response codes

Client error (4xx)

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 theResponse codes tab, where you can filter, inspect each page and export the list to CSV. The free version crawls up to 500 URLs with every check enabled.