404 Error
A “page not found” response — harmless in small numbers, costly at scale.
What it means
A 404 error is the HTTP status returned when a requested URL doesn’t exist. Internal 404s happen when a link points to a removed or misspelled URL.
How it affects your SEO
Occasional 404s are normal and not penalized, but large volumes of internal broken links waste crawl budget, frustrate users, and leak link equity that pointed at the old URL. Auditing and redirecting them recovers both.
404 Error — frequently asked questions
Do 404 errors hurt SEO?
Occasional 404s are normal and not penalized. Large volumes of internal broken links waste crawl budget and leak link equity — audit and redirect those that pointed at real content.
Should I redirect every 404?
No. Only redirect 404s that had inbound links or real traffic to a relevant live page. Redirecting every random 404 to the homepage is unhelpful and can waste crawl budget.
Related SEO terms
Tells Google which version of a page is the “real” one when duplicates exist.
Google’s three speed-and-stability metrics: LCP, INP, and CLS.
Structured data that labels content (reviews, FAQ, products) for search engines.
How many pages Google will crawl on your site per day.
Is this hurting your rankings?
Run a free 60-second audit and find out where 404 error — and dozens of other factors — stand on your site.
Get my free SEO score