Do 404 errors hurt SEO?

No, not in themselves. Every site that has deleted a page has 404s and Google expects them. What hurts is a 404 on a URL with links or traffic, a soft 404 that returns 200, or internal links pointing at dead pages.

Should I redirect all my 404s to the home page?

No. Google reads a mass redirect to the home page as a soft 404, so the URLs are dropped anyway and their links are wasted. Redirect to an equivalent page, or return 404 or 410.

What is the difference between 404 and 410?

404 says the server has nothing at that URL. 410 says it was removed on purpose and will not return. Google treats both as gone and may act on 410 slightly faster.

My 404 page looks right but Search Console reports soft 404. Why?

Because the server answered 200 before your page rendered. Check with a headers request rather than in the browser. Client-rendered apps do this by default unless the server is told to return 404 for unknown paths.

Should the 404 page be noindexed?

It does not need to be. A correct 404 status keeps it out of the index by itself. Adding noindex to a page that already returns 404 changes nothing.

The 404 page: the status code, and what the visitor sees

A 404 page has two audiences. Search engines read the status code and nothing else. People read the page and decide whether to leave. Most sites get the second right and the first wrong, and only the first affects the index.

By Théophile Louvart, founder of Porteur · Updated 15 September 2026 · Markdown

The status code is what search reads

When a URL does not exist, the server must say so in the response, not only in the text of the page.

$ curl -sI https://yourproduct.com/does-not-exist | head -n 1
HTTP/2 404

# Wrong, and invisible to a visitor:
HTTP/2 200

404 means the server has nothing at that URL.
410 means it was there and was deliberately removed.
200 with an error message is a soft 404, and Google will decide for itself that the page is gone.
A redirect to the home page is also read as a soft 404, so the old URL is dropped and its links are wasted.

The soft 404 trap

Google reports soft 404s in the Page indexing report. They come from four patterns, and all four are yours to fix.

Pattern	What the server says	The fix
An error screen rendered by the client	200	Return 404 from the server for unknown paths, then render the screen
Empty category, search or listing pages	200	Give them content, or noindex the empty state
A redirect from every missing page to the home page	301 to a 200	Redirect only to an equivalent page, otherwise return 404 or 410
A page whose data fetch failed and rendered an empty shell	200	Return the right status when the data is missing, and do not render an empty page

The cost is not a penalty. It is that URLs you did not choose stay in the index looking like real pages, and pages you deleted are reported as decisions you did not make.

404 or 410, and when it matters

404 for anything the server does not have: typos, guessed URLs, pages that never existed.
410 for pages you removed on purpose and will not bring back. It is a clearer signal and can be acted on a little faster.
Neither is a penalty. A site that has ever deleted a page has 404s, and that is normal.
Do not return 404 for a page that is temporarily down. Use 503 with a Retry-After header so crawlers come back.

The practical difference is small. The decision that matters is the one before it: does this URL have an equivalent page, or not?

When a redirect is better than a 404

Situation	Answer
The page moved to a new URL	301 to the new URL, one hop
The page was merged into another that answers the same question	301 to that page
A product was discontinued and a close replacement exists	301 to the replacement
A product was discontinued and nothing replaces it	404 or 410, with the category linked from the error page
A campaign URL that will never return	410
A typo URL nobody links to	404, and do nothing else

What belongs on the page a visitor sees

The status code handles search. Now handle the person, who arrived from a stale link or a typo and is one click from leaving.

A plain sentence saying the page is not here. No joke that delays the answer.
A search box, if the site has search. This is the single most useful element.
Links to the main sections, the same ones as the navigation.
Three or four popular pages, chosen from your own Search Console data rather than guessed.
A link to contact or support, for the person who followed a link from your own email.
The site's normal navigation and footer, so the page is a place rather than a dead end.

Keep the design in the site's own vocabulary. A 404 page that looks like a different website reads as a broken site rather than a missing page.

Finding the 404s that matter

Export Not found from the Page indexing report
Google lists the URLs it tried and failed to fetch. Most will be noise.
Mark the ones with external links
The Links report shows your top linked pages. A 404 with links is equity sitting in a dead end.
Mark the ones that had clicks
Filter the Performance report by page over sixteen months. A URL that used to bring people deserves a redirect.
Crawl your own site for internal links to 404s
Links inside your own pages pointing at dead URLs are the easiest fix and the most embarrassing to leave.
Check the sitemap
A sitemap listing 404s tells Google to keep fetching them. Remove them.

Everything left after those four filters is a typo nobody links to. Let it return 404 forever and spend the hour elsewhere.

Testing your 404 page

Request a nonsense URL
Ask for the headers only and read the first line. It must say 404, on the live site, not on your machine.
Test a nonsense URL in every section
Frameworks often handle the root correctly and a dynamic route incorrectly, so try /guides/nonsense and /product/nonsense too.
Test with the trailing slash and in mixed case
These take different code paths more often than anyone expects.
Inspect one in Search Console
The URL Inspection tool reports the status Google saw, which settles any argument with your own browser.
Watch the Page indexing report
Soft 404 should trend to zero. If it does not, a template is still answering 200 for missing content.

Questions

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