How 301 Moved Permanently Redirects Protect Your SEO Rankings
An HTTP 301 Moved Permanently status code is the industry standard for permanently transferring a web address. When Googlebot or Bingbot encounters a 301 redirect, it updates its search index to credit all accrued backlinks, authority, and ranking signals directly to the target URL.
However, improper implementation—such as redirect chains (A ➡️ B ➡️ C) or accidental temporary 302 codes—delays search engine crawling, wastes crawl budget, and degrades user experience. Testing with this tool ensures that your 301 redirects resolve in a single clean hop.
How to Configure 301 Redirects in Apache, Nginx & Next.js
Apache (.htaccess)
Direct single-page and domain-wide HTTP to HTTPS redirect rules:
# 1. Single Page 301 Redirect
Redirect 301 /old-page /new-page
# 2. Force HTTPS & WWW canonical
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]Nginx Configuration (nginx.conf)
Fast native return 301 directive within server blocks:
# 1. Single Path 301 Redirect
location = /old-slug {
return 301 https://example.com/new-slug;
}
# 2. Global HTTP to HTTPS redirect
server {
listen 80;
server_name example.com www.example.com;
return 301 https://example.com$request_uri;
}Frequently Asked Questions About 301 Redirects
What is an HTTP 301 Moved Permanently redirect status code?
An HTTP 301 Moved Permanently status code indicates that the requested resource has been definitively reassigned to a new permanent URI given by the Location response header. Browsers and web crawlers automatically update their bookmarks, caches, and search engine indexes to reference the target URL.
Does a 301 redirect pass full Google PageRank and link equity?
Yes. Google representatives have confirmed that 301 redirects pass 100% of PageRank link equity without loss, identical to a direct canonical link. However, redirect chains involving intermediate hops can introduce latency that slows down crawler discovery and indexing.
When should you use a 301 redirect instead of a 302 or 308?
Use a 301 redirect whenever a page or domain move is permanent, such as transitioning from HTTP to HTTPS, updating permalink slugs, consolidating duplicate articles, or rebranding a company website. For temporary migrations or A/B split testing, use a 302; for permanent API endpoints preserving POST methods, use a 308.
How do you detect and fix 301 redirect chains?
Paste your URLs or sitemap into this tool to trace every hop in sequence. If an audit reveals that URL A redirects to URL B which then redirects to URL C, update the server redirect rules or CMS configuration so that URL A points directly to URL C in a single step.
How do browsers cache 301 redirects and how do you purge them?
Browsers cache 301 permanent redirects aggressively on the client device. If a 301 redirect is configured mistakenly, visitors may continue redirecting even after the server rule is removed. You can clear the cache in Chrome or Firefox by clearing browser history and cached images/files.