What is the difference between 301 and 302 redirects?

301 (Moved Permanently) indicates permanent relocation; search engines transfer SEO value and update indexes. 302 (Found/Temporary) indicates temporary moves; search engines keep original URL indexed and don't transfer full SEO value. Use 301 for permanent changes (domain migrations, HTTPS). Use 302 for A/B testing, maintenance pages, or truly temporary moves. Wrong choice impacts SEO significantly.

What are 307 and 308 redirects?

307 (Temporary Redirect) and 308 (Permanent Redirect) are HTTP/1.1 successors to 302/301 that preserve the request method (POST, PUT, etc.). Unlike 301/302, which may change POST to GET, 307/308 guarantee method preservation. Use 308 for permanent API endpoint changes requiring method consistency. Browser support is excellent; 307/308 are increasingly preferred for modern applications requiring strict HTTP semantics.

How do redirects affect SEO and page speed?

Each redirect adds 200-500ms latency, directly impacting Core Web Vitals (LCP, FID). Redirect chains waste crawl budget, potentially leaving important pages unindexed. 301 redirects pass 90-99% of PageRank, but chains dilute this through each hop. Mobile networks experience worse impact. Minimize redirects: update links directly, avoid chains, use server-side over client-side (meta refresh, JavaScript) redirects when possible.

What is a redirect loop and how do I fix it?

Redirect loops occur when URL A redirects to B, which redirects back to A, creating infinite cycles. Browsers typically stop after 10-20 redirects. Common causes: conflicting .htaccess rules, HTTPS/non-HTTPS misconfigurations, CDN settings conflicting with origin server, WordPress plugin conflicts. Fix by examining redirect rules systematically, testing with curl or browser developer tools, and eliminating circular dependencies.

Should I redirect HTTP to HTTPS at the server or CDN level?

Redirect at the earliest possible point to minimize latency. CDN/load balancer redirects are fastest, occurring at the edge before reaching origin servers. Server-level redirects work but add round-trip time. Implement HSTS (HTTP Strict Transport Security) headers to eliminate HTTP requests entirely after first visit. Modern best practice: redirect at CDN, enforce HSTS, include in preload list for maximum security and performance.

How do I handle redirects during site migrations?

Plan redirect mapping carefully: audit old URLs, create 1:1 mappings to new URLs, avoid chains (redirect old URL directly to final destination), test thoroughly before launch. Use 301 redirects for permanent moves. Monitor 404s post-launch and create redirects as needed. Maintain redirects for 1-2 years minimum. Update internal links to avoid redirects. Submit new sitemap to search engines post-migration.

What tools help analyze and monitor redirects?

Browser developer tools (Network tab) show redirect chains with status codes and timing. Server tools: curl with -L flag, Screaming Frog SEO Spider for site-wide analysis. Online checkers validate individual URLs. SEO tools (Ahrefs, SEMrush) identify redirect issues. Monitor with synthetic monitoring, log analysis, or RUM (Real User Monitoring). Set up alerts for unexpected redirect patterns or increased redirect latency.

What is the difference between 301, 302, 307, and 308 redirects?

A 301 redirect is permanent and cached by browsers, while 302 is temporary. 307 and 308 are HTTP/1.1 updates that preserve the HTTP method - 307 is temporary like 302, and 308 is permanent like 301. Use 301/308 for permanent URL changes and 302/307 for temporary redirects.

Home/Tools/Network/Redirect Chain Checker

Redirect Chain Checker

Analyze HTTP redirect chains and identify 301, 302, 307, 308 redirects affecting SEO

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What Is a Redirect Chain Checker

A redirect chain checker traces the complete path an HTTP request follows from the initial URL to its final destination. When a URL redirects to another URL, which may redirect again, a chain forms. Each hop in the chain adds latency, can lose referral data, and dilutes SEO link equity—making redirect chains a significant performance and search optimization concern.

Redirect chains are common on websites that have undergone redesigns, domain migrations, or URL structure changes. Over time, a page originally at /old-page might redirect to /new-page, which later redirects to /final-page. Each intermediate redirect wastes server resources and slows page load times for users and search engine crawlers.

How HTTP Redirects Work

When a browser or bot requests a URL, the server responds with an HTTP status code. Redirect status codes instruct the client to request a different URL:

Status Code	Name	Meaning	SEO Impact
301	Moved Permanently	Resource permanently relocated	Passes ~90-99% link equity
302	Found	Temporary redirect	May not pass link equity
303	See Other	Redirect after POST	Minimal SEO impact
307	Temporary Redirect	Temporary, preserves method	May not pass link equity
308	Permanent Redirect	Permanent, preserves method	Passes link equity
Meta refresh	HTML-level redirect	Client-side redirect	Poor SEO practice

A redirect chain occurs when multiple redirects are chained: URL A → URL B → URL C → URL D. Google has stated they will follow up to 10 redirects but recommend keeping chains as short as possible. Each hop introduces 50-500ms of additional latency depending on server response time and geographic distance.

Common Use Cases

SEO auditing: Identify redirect chains that dilute PageRank and slow crawling
Site migration verification: Confirm that old URLs reach their intended destinations with minimal hops
Performance optimization: Find and eliminate unnecessary intermediate redirects
Broken link detection: Discover chains that end in 404 errors or redirect loops
Marketing campaign tracking: Verify that shortened URLs and UTM-tagged links resolve correctly

Best Practices

Eliminate chains by pointing directly to the final destination — Update intermediate redirects to point straight to the canonical URL
Use 301 for permanent moves — Only use 302/307 when the redirect is genuinely temporary
Audit redirects quarterly — Chains accumulate over time as URLs change; regular audits prevent performance degradation
Monitor redirect loops — A loop (A → B → A) creates an infinite cycle that blocks access entirely
Keep chains under 3 hops maximum — Google follows up to 10, but fewer hops means faster crawling and better user experience

References & Citations

Roy Fielding & Julian Reschke. (2014). RFC 7231: HTTP/1.1 Semantics and Content. Retrieved from https://www.rfc-editor.org/rfc/rfc7231 (accessed January 2025)
Google Search Central. (2024). Google SEO Guidance on Redirects. Retrieved from https://developers.google.com/search/docs/crawling-indexing/301-redirects (accessed January 2025)

Note: These citations are provided for informational and educational purposes. Always verify information with the original sources and consult with qualified professionals for specific advice related to your situation.

Frequently Asked Questions

Common questions about the Redirect Chain Checker

A redirect chain occurs when URL A redirects to B, which redirects to C, creating multiple hops before reaching the final destination. Each redirect adds latency (200-500ms), wastes crawl budget, dilutes SEO value (PageRank), and frustrates users. Google recommends maximum 3-5 redirects. Chains often result from site migrations, HTTPS upgrades, or domain changes without updating intermediate redirects.