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What is a 404 error? How it affects SEO and how to fix it

Krishna Choudhary
March 26, 2025
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    Have you ever clicked on a website and seen the message "404 Not Found" on your screen? It's a common experience, but if it's happening on your website, it can cause concern. But what exactly is a 404 error? It happens when a user or search engine tries to find a page on your site, but the page doesn't exist.

    A 404 error annoys users and can hurt your website's SEO (Search Engine Optimization). In this blog, we'll explain what a 404 error is, how it affects your site's rankings and the easy ways to fix it. Specifically, we'll provide steps for WordPress users. So, if you want to improve your site, this guide is for you. Let's get started!

    What is a 404 error?

    A 404 error is an HTTP status code indicating that the server could not find the page the user requested or the search engine requested. This happens when:

    Examples:

    Correct URL: www.example.com/about-us

    404 error URL: www.example.com/abuot-us (mistyping) or www.example.com/old-page (deleted page).

    When a user visits a 404 error, a message like "Page Not Found" or "404 Error" usually appears on the screen. This can be frustrating for the user.

    How does a 404 error affect SEO?

    A 404 error affects your website's SEO and performance in several ways. Let's understand this in detail:

    1. Poor user experience: If users repeatedly get 404 errors, they may leave your site, which reduces its credibility.
    2. Increases bounce rate: When a user returns after reaching a 404 page, the bounce rate increases. Google may consider this a negative signal.
    3. Waste of crawl budget: Search engines like Google have a limited budget for crawling each site. If they repeatedly reach 404 pages, the chance of crawling your important pages decreases.
    4. Impact on ranking: If important pages of your site show 404 errors and have backlinks, they may lose their value, leading to a drop in ranking.

    However, Google says some 404 errors are normal and do not directly harm the ranking. If there are too many, it may raise questions about the quality of your site.

    Reasons for 404 error

    Why does a 404 error happen? There are some main reasons for this:

  • Page deletion: An old page was removed, but its link was not
    • Wrong URL typing: Typo in the user or the link (such as "about" instead of "about").
    • Page deletion: An old page was removed, but its link was not
      updated.
    • URL change: The page's slug or permalink was changed, but the old link was not redirected.
    • Broken links: Wrong link is connected to your site or another site.

    How do I find 404 errors?

    Before fixing it, you should know where 404 errors are on your site. There are some tools for this:

    Google Search Console:

    Go to the "Coverage" section.

    You will find a list of 404 errors in the "Errors" tab.

    • Broken Link Checker: Use a WordPress plugin. It finds all the broken links on your site.
    • Ahrefs or SEMrush: These premium tools show 404 errors and their sources.

    How do you fix 404 errors?

    Now, the real question is: how do we resolve 404 errors? Here are the detailed steps for WordPress users:

    1. Setup redirects:

    If a page is deleted or its URL has changed, redirect the old URL to the new URL.

    How to do it in WordPress:

    • Install the plugin Redirection.
    • Enter the old URL (e.g.,/old-page) and the new URL (e.g.,/new-page) in "Add New Redirection."
    • Select "301 Permanent Redirect" and save.

    Benefit: Users and search engines will redirect from the old link to the new page.

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  • Create a custom 404 page:
  • Create a user-friendly page to replace the default 404 page.

    How to do it in WordPress:

    Benefit: Keeps users on the site.

    1. Fix broken links:
    1. Correct URL:

    If there is a typo, use the correct URL and redirect the old one.

    Example: Redirect /about-us to /about-us.

    1.  Update Google:

    Use the "URL Inspection Tool" in Google Search Console.

    Submit the updated URL so Google can recrawl it.

    Avoid these mistakes

    Keep some things in mind while fixing 404 errors:

    Conclusion

    404 errors are a common problem, but ignoring them can cost your website dearly. Not only does it ruin the user experience, but it can also affect your SEO rankings. In this guide, we explained what a 404 error is, why it happens, and how to fix it on WordPress. Setting up redirects, creating custom 404 pages, and fixing broken links can help you improve your site.

    So don't wait any longer! Check for 404 errors on your site and fix them with these easy steps. Both your visitors and search engines will love a clean and fast website.

    Frequently Asked Questions

    A 404 error is an HTTP status code that indicates the requested webpage is not found on the server. This can happen if the page has been deleted, the URL is incorrect, or the link is broken. To fix a 404 error, you can check for incorrect URLs, restore the missing page, update internal links, or use a 301 redirect to send users to a relevant page instead.

    Fixing 404 errors is crucial because they create a bad user experience, leading to frustration and increased bounce rates. If visitors frequently encounter broken links, they may leave your site, reducing engagement and potential conversions. Moreover, too many 404 errors can make your website appear poorly maintained, affecting trust and credibility.

    A 404 error in SEO refers to missing pages that search engines try to crawl but cannot find. If search engines frequently encounter 404 errors, it may waste crawl budget (the number of pages Google crawls on your site), affecting indexing and ranking. This is particularly problematic if backlinks point to missing pages, leading to lost link equity.

    Yes, 404 errors can affect SEO, but the impact depends on how they are handled. A few 404 errors are normal and won’t significantly harm rankings. However, excessive broken links and missing pages can result in poor user experience, increased bounce rates, and lost link juice from backlinks. Redirecting important missing pages to relevant content with 301 redirects can help maintain SEO value.

    Generally, a 404 error is bad because it disrupts user experience and can harm SEO if not managed properly. However, it is not always negative—sometimes, pages naturally become obsolete. The key is to handle them correctly by redirecting essential pages and providing a useful 404 error page with navigation or search options to help users find relevant content.

    Krishna Choudhary

    Krishna Choudhary

    Author

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