Category: Technical SEO

404 error

No page exists at the given address.

The 404 (Not Found) code means there is no resource at a given address. Single 404s are natural, but mass errors from linked pages hurt experience and waste crawl budget. Valuable removed URLs are worth redirecting with a 301.

🔗 Related terms

S

Soft 404

An empty page wrongly returning a 200 code.

E

5xx error

Server errors (500, 502, 503...).

R

301 redirect

A permanent move of an address to a new URL.

R

robots.txt

A file controlling bot access to the site.

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