Search
FAQ
What is a 404 Error? Why Does It Appear on Your Website and How to Fix It?
- Şanlısoy
- 13/03/2026 14:25
What is a 404 Error and What Does It Mean?
A 404 error is an HTTP status code indicating that a web page cannot be found on the server. When a user attempts to access a non-existent or moved page, the browser displays a "404 Not Found" message. This error code is one of the standard response codes in the HTTP protocol, used to inform the client that the server cannot find the requested resource.
404 errors typically occur due to deleted pages, mistyped URLs, broken links, or site structure changes. For example, if a product page is removed from the catalog or a blog post is deleted, old links will generate 404 errors. This negatively impacts user experience and can cause visitors to leave your site.
Why Do 404 Errors Occur on Your Website?
404 errors have many different causes. The most common reason is changing a page URL without updating old links. During website redesign or migration, when page structure changes, old URLs become invalid. Additionally, manually entering incorrect links is a frequent issue, especially with complex URL structures.
Other common causes include deleted or moved content, broken internal or external links, misconfigured redirects, and CMS (Content Management System) errors. In e-commerce sites, pages of out-of-stock products, deletion of old content on blog sites, and faulty links in social media or email campaigns also lead to 404 errors. Regular site maintenance and link checking minimize these issues.
How Do 404 Errors Affect SEO and User Experience?
404 errors do not directly lower your SEO rankings, but can cause serious indirect damage. Google considers occasional 404 errors normal, but widespread and persistent 404 errors reduce your site's quality. If users constantly encounter 404 pages, they immediately leave your site, resulting in high bounce rates and low user engagement. When Google evaluates these signals, it may not find your site trustworthy.
Furthermore, if valuable backlinks point to 404 pages, this link value is lost and your domain authority suffers. From a user experience perspective, 404 errors cause frustration, loss of trust, and decline in brand image. Especially if the product or service page a potential customer is looking for returns a 404, you lose sales. Designing a professional 404 page and quickly fixing errors reduces these negative effects.
How to Find and Fix 404 Errors?
Google Search Console is the most effective free tool for detecting 404 errors. In the "Coverage" or "Crawl" reports, you can view a list of URLs returning 404 errors. Additionally, SEO tools like Screaming Frog, Ahrefs, and SEMrush crawl your site and report all broken links and 404 errors. Regularly checking your site logs and monitoring visits to 404 pages in your analytics tools also provides early detection.
To fix errors, first implement a 301 redirect (permanent redirect) if there's a correct alternative for the faulty URL. This way, users and search engines are automatically redirected to the correct page and link value is preserved. If the page is permanently removed and has no alternative, create a custom-designed 404 page. This page should include links to the homepage, popular content, or a search box, help the user, and reflect your brand identity. Regular site audits and proactive link management keep 404 errors to a minimum.
İlgili Kelimeler:- 404 error
- page not found
- 404 not found
- website error
- broken link