Crawl Error

A crawl error occurs when a search engine attempts to reach a page on your website but fails. This issue can be attributed to a variety of causes ranging from server errors to the non-existence of a page (404 error).


  1. DNS errors: These errors signify that the search engine is unable to communicate with your website’s server due to DNS (Domain Name System) issues. This can be the result of the server being down, or there might be a problem with the DNS routing to your domain.
  2. Server errors: These are indicated when a search engine cannot access your site because the server is overloaded or misconfigured. Server errors may include the HTTP 5xx status codes such as 500 (Internal Server Error) and 503 (Service Unavailable).
  3. Robots failure: This type of error suggests that search engines are unable to retrieve your sites robots.txt file, which can be due to the file being unavailable or blocked. The robots.txt is crucial as it informs the search engine crawlers which pages should not be indexed.
  4. 404 Not Found: This is the most common type of crawl error, where the page the search engine is trying to index does not exist. This might occur if the page has been deleted or if there is a typo in the URL.

Crawl errors play a significant role in SEO as they can impede search engines from indexing your content, thus affecting a website’s visibility and ranking in search engine results pages (SERPs).

Best practices for resolution:

  • Regular monitoring: Utilize webmaster tools such as Google Search Console to track crawl errors regularly.
  • 301 Redirects: If a page is permanently moved or deleted, set up a 301 redirect to a relevant live page, minimizing the impact of the error.
  • Correcting site errors: Work on server and DNS configurations to ensure they are functioning properly at all times to avoid crawl errors associated with these issues.
  • Update links: Identify and update internal and external links that lead to non-existing pages (404s).
  • Robots.txt Management: Ensure that your robots.txt file is accessible and configured properly so search engine crawlers are effectively directed.

By effectively managing and resolving crawl errors, you ensure a smoother pathway for search engine crawlers, which can enhance the indexing of your content and improve your websites overall SEO performance.


How can crawl errors be resolved?

Crawl errors can be resolved by regularly monitoring them through webmaster tools, setting up 301 redirects for moved or deleted pages, correcting server and DNS configurations, updating links to fix 404 errors, and ensuring proper management of the robots.txt file.

How do crawl errors impact SEO?

Crawl errors can negatively impact SEO by obstructing search engine crawlers from indexing your websites content, which can result in decreased visibility and lower rankings in search engine results pages.

What are common types of crawl errors?

Common types of crawl errors include DNS errors, server errors (HTTP 5xx status codes), robots.txt failures, and 404 Not Found errors when a page does not exist.

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