What is a 301 Redirect?

A 301 redirect is a permanent redirection from one URL to another, signaling to browsers and search engines that the original page has moved indefinitely.

Definition of a 301 Redirect

A 301 redirect is an HTTP status code indicating that a web page or resource has been permanently moved to a new location. When a user or a search engine bot tries to access the old URL, the server automatically sends them to the new, specified URL. The '301' in its name refers to the HTTP status code for 'Moved Permanently'. This type of redirect is crucial for maintaining website integrity and user experience when URLs change.

Why 301 Redirects Matter for SEO

For SEO purposes, 301 redirects are invaluable because they pass approximately 90-99% of the link equity (PageRank) from the old page to the new one. This means that any SEO value built up by the old URL, such as backlinks and ranking power, is largely transferred to the new URL. Without a proper 301 redirect, changing a URL or moving a page can result in significant loss of organic traffic and search engine rankings, as search engines would treat the new page as entirely separate and the old page as broken (404 error).

Real-World Example

Imagine your e-commerce site had a product page at https://www.example.com/products/old-shoe-model. You've launched an updated version and moved the page to https://www.example.com/products/new-improved-shoe. Implementing a 301 redirect from the old URL to the new one ensures that customers and search engines automatically find the updated product, and all the SEO authority from the original page is preserved for the new one. This prevents broken links and maintains your search visibility.

Common Mistakes to Avoid

  • Using Temporary Redirects (302) for Permanent Moves: A 302 redirect signals a temporary move, which can confuse search engines and dilute link equity transfer. Always use 301 for permanent changes.
  • Creating Redirect Chains: Multiple redirects (A to B to C) slow down page load times and can also dilute or even lose link equity. Aim for direct redirects (A to C).
  • Redirecting to Irrelevant Pages: Redirecting an old page to a completely unrelated new page can confuse users and search engines, negatively impacting SEO.

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Frequently asked questions

What is the difference between a 301 and a 302 redirect?

A 301 redirect is permanent, passing most SEO value. A 302 redirect is temporary and should only be used for short-term relocations, as it does not pass the same amount of SEO value.

When should I use a 301 redirect?

Use a 301 redirect when permanently moving a page, changing domains, consolidating content, or correcting broken links and canonical issues.

How do 301 redirects affect user experience?

301 redirects improve user experience by seamlessly guiding visitors from an old, potentially outdated or broken URL to the correct, active page, preventing 404 errors.