What is a 404 Error?
A 404 error, also called aPage Not Founderror, is an HTTP status code. It means the server couldn't find the page or resource you requested. You'll see a message like404 Not Foundin your browser window.
This usually happens because the page was moved, deleted or you typed the URL incorrectly. The server itself is working fine. It's simply reporting that the specific page doesn't exist at that address. Think of it as asking for a book that's no longer on the library shelf.
Why 404 Errors Matter for SEO
Too many 404 errors can hurt your SEO. When users hit a 404 page, they often leave your site. This increases your bounce rate. A high bounce rate signals to search engines that your site might not be providing a good user experience. They want to show users relevant, working pages.
Search engines also waste crawl budget on non-existent pages. Crawl budget is the number of pages Googlebot will crawl on your site. If it spends time on 404s, it might miss crawling important new content. This can delay your new pages from ranking. It also means you're losing potential link equity from broken internal or external links.
How to Fix 404 Errors
Identify them: Use Google Search Console to find crawl errors. Tools like Screaming Frog or Ahrefs can also scan your site for broken links.
Correct internal links: If your site links to a 404 page, update that link to the correct URL. This is the fastest fix.
Implement 301 redirects: If a page moved permanently, set up a 301 redirect. This sends users and search engines from the old URL to the new one. It passes on link equity too.
Restore deleted content: If you accidentally deleted a page that should still exist, restore it. This is usually the best option for valuable content.
Create a custom 404 page: For pages that are genuinely gone, create a helpful custom 404 page. Include a search bar, links to popular content or your homepage. This improves user experience even if they hit a dead end.
Common Mistakes
Ignoring 404 reports in Google Search Console. These reports are a goldmine for identifying issues.
Redirecting all 404s to your homepage. This is a soft 404 and can confuse search engines and users.
Not creating a custom 404 page. A generic 404 page is a bad user experience.
Failing to update internal links after moving or deleting pages. This creates more 404s.