SEO Glossary
What is 301 Redirect?
A 301 redirect is a permanent redirect from one URL to another. It tells search engines that a page has permanently moved to a new location and transfers most of the original page's link equity (ranking power) to the new URL.
301 redirects are essential when moving content, changing URL structures, or consolidating pages - they preserve your SEO value.
1
When to use 301 redirects
• Permanently moving a page to a new URL
• Changing your domain name
• Consolidating multiple pages into one
• Switching from HTTP to HTTPS
• Removing a page and pointing to relevant content
• Fixing URL structure issues
• Merging duplicate content
Always use 301s for permanent moves. They tell Google to transfer ranking signals to the new URL.
2
301 vs 302 redirects
301 (Permanent) - Use when content has permanently moved
• Transfers ~90-99% of link equity
• Google de-indexes the old URL
• Browsers cache the redirect
302 (Temporary) - Use when content will return to the original URL
• May not transfer link equity
• Google keeps the old URL indexed
• Used for A/B testing, maintenance pages
Using a 302 when you mean 301 is a common mistake that can hurt SEO.
3
SEO impact of 301 redirects
301 redirects transfer most link equity, but not 100%. Google's John Mueller has confirmed that some ranking power is lost in any redirect.
Best practices:
• Redirect to the most relevant page (not just the homepage)
• Avoid redirect chains (A → B → C → D)
• Update internal links to point directly to the new URL
• Monitor redirected pages in search console for crawl errors
• Keep redirects in place permanently - don't remove them after a few months
4
Common redirect mistakes
• Redirect chains - Multiple hops lose more link equity
• Redirect loops - A → B → A (causes errors)
• Redirecting to irrelevant pages - Hurts user experience and SEO
• Too many redirects - Slows page speed
• Removing redirects too soon - Users and search engines still follow old URLs
• Not updating internal links - Unnecessary redirect hops on your own site
FAQ
Frequently asked questions
Do 301 redirects pass full link equity?
Nearly full, but not 100%. Google has said there is minimal loss in practice.
How long should I keep 301 redirects?
Indefinitely if possible. At minimum, keep them for 1+ year to ensure search engines have fully processed the move.
Find redirect issues
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