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SEO 404 Page Best Practices

A 404 page is the page shown when a requested URL does not exist, and a well-built one helps users recover without harming SEO.

If you have ever worried that a branded 404 page design will fix your rankings, you already know the real work is in the status code and the redirect logic.

Key points

  • Return a real 404 (Not Found) HTTP status code, never a 200 OK, on missing pages.
  • Use a 301 redirect only when a page has permanently moved to a relevant replacement.
  • Do not blanket-redirect all missing URLs to the homepage; let truly gone content 404.
  • Add site search and clear navigation to help users find what they need.
  • Monitor broken URLs in Google Search Console and fix internal links or old backlinks.

A 404 page that kept users on site

An ecommerce site removed an old product line, leaving 200 URLs returning 200 OK with a 'nothing here' message. Google indexed them as soft 404s. After switching to true 404 status codes and adding a search bar plus category links on the custom page, crawl errors dropped by 60% in Search Console, and users who landed on those pages clicked through to other products at a 35% rate.

Three situations where this changes your decision

  • Content permanently removed If there is no equivalent replacement, leave the URL as a real 404 or use 410 Gone. Do not redirect to the homepage, which confuses users and search engines and can harm image SEO if images are involved.
  • Content moved to a new URL Use a 301 redirect to the most relevant replacement page. This passes link equity and avoids a 404 for users who follow old links or bookmarks.
  • Temporary outage or maintenance Return a 503 Service Unavailable status code instead of a 404. A 503 signals a temporary issue, so search engines will come back later rather than deindex the page.

Three ways it goes wrong

  • Returning 200 on missing pages This creates a soft 404, a common 404 SEO mistake that wastes crawl budget and can harm indexing.
  • Blanket redirecting to homepage Every missing URL sent to the homepage dilutes the homepage's relevance and frustrates users looking for specific content. Google guidance advises against this.
  • Leaving broken internal links Internal links pointing to 404 pages waste link equity and create a poor user experience. Fix the source URL or redirect the destination.

Common questions

Are 404 errors bad for SEO?

Not inherently. A real 404 is fine; what hurts is soft 404s (200 on missing pages) or broken internal links that waste crawl budget.

What to do with 404 pages?

Fix internal links pointing to them, redirect only if a relevant replacement exists, and let truly gone content 404 or 410.

How to remove 404 pages from Google index?

Ensure the server returns a real 404 or 410 status code. Google will naturally deindex them over time; you can also request removal in Search Console.

Sources

  1. Google Search Central / Google guidance on redirects and not-found handling Official guidance on 404 handling, soft 404s, and redirect best practices.
  2. Google Search Console Help How to monitor and fix 404 errors in Search Console reports.
  3. Moz Learn SEO Overview of error pages, including 404 and 301 redirects, with practical examples.
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