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Website Migration Redirect Checklist: Before, During, and After Launch

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A website migration touches every URL your site exposes, and redirects are the safety net that keeps old addresses working. Redirect Chain Checker is a free HTTP diagnostics tool that follows a public URL one hop at a time and shows the source URL, destination URL, status code, redirect type, and response time for each request. This checklist walks through the redirect work before, during, and after launch: building the URL mapping, testing old-to-new paths, fixing canonical references, internal links, and sitemaps, and monitoring the chain results once the new site is live.

Function Overview

Redirect Chain Checker is a public HTTP diagnostics tool. On the home page, enter a public HTTP or HTTPS URL in the URL to check field and select Check Redirects. The checker follows the public response one hop at a time and reports the source URL, destination URL, HTTP status, redirect type, and response time for each request. The result also identifies the final URL, redirect hop count, and total request count.

The tool is useful for migration testing, HTTPS checks, affiliate link review, short URL expansion, and troubleshooting. It reports the path that the public request took; it does not edit server rules, crawl an entire site, or provide a ranking score. Local, private, reserved, and non-HTTP destinations are blocked, and the checker warns after ten hops.

Before Launch: Build the URL Mapping

1. List every old URL you are changing

Collect the addresses that will move: old paths, protocol variants, www and non-www forms, trailing-slash variants, and any pages that will be removed or merged. A migration checklist is only as complete as the source list, so export your existing URLs before launch rather than reconstructing them from memory.

2. Map each old URL to one final URL

Every old address should map to exactly one new destination. Avoid chains where an old URL redirects to an intermediate URL that then redirects again. When a page moves permanently, plan for the old rule to point directly at the final URL so visitors and crawlers reach the destination in one hop.

3. Classify the redirect type

Use a permanent redirect such as 301 or 308 for a permanent move, and a temporary redirect such as 302 or 307 for temporary conditions. The status code matters because it describes the move to browsers and search engines.

4. Prepare the new canonical references

Decide the final canonical URL for each page before launch. Canonical tags, internal links, navigation, XML sitemap entries, and other site-owned references should point at the final URL rather than at an old address that still needs a redirect.

During Launch: Test the Redirects

1. Check the old URL after the rule is live

Open Redirect Chain Checker, paste the old address into URL to check, and select Check Redirects. The form accepts an HTTP or HTTPS address with or without the https:// prefix.

2. Read the summary first

Start with Final URL, Redirect hop count, and the total request count. One direct hop to the intended HTTPS destination is the normal target. Several hops suggest that an intermediate URL is unnecessary or that a rule is not pointing where you expect.

3. Inspect each hop row

Review the source URL, destination URL, status, type, and response time in order. Look for repeated URLs, a destination that cannot be reached, a change to an unexpected domain, or a secure URL that ends at HTTP. A slow row identifies where extra delay is introduced.

4. Fix, copy, and retest

After changing a rule, use Copy report, Download JSON, or Download CSV to keep a before-and-after result, then run the same URL again and confirm the report now follows the intended shortest path. Copy share link preserves a result for review, and signed-in users can review stored reports in Check History.

Canonical, Internal Links, and Sitemaps

Canonical URLs

Each migrated page should declare its canonical URL. If a canonical tag points at an old address, crawlers can end up reconciling the page against a URL that itself redirects. After launch, verify that the canonical target is the final HTTPS URL of the page.

Internal links

Internal links, navigation, and footer links should use the final URL so visitors and crawlers do not have to request an avoidable redirect. You can sample internal destinations with the Checker to confirm they respond directly or with an expected single hop.

XML sitemaps

Sitemap entries should list final URLs, not old addresses. A sitemap full of redirecting URLs wastes crawl requests and makes the preferred destination unclear. Replace or regenerate the sitemap for the new structure and confirm the entries return the final pages.

After Launch: Monitor the Migration

1. Re-test representative URLs

Check a sample of old URLs from each part of the mapping: homepage variants, top pages, removed or merged paths, and URLs that previously failed. Each check confirms that the public request still reaches the intended destination.

2. Watch for loops, broken targets, and downgrades

Inspect reports for a URL that appears again, a destination that cannot be reached, or an HTTPS URL that ends at HTTP. These signals usually point to conflicting rules across the web server, CDN, or application.

3. Keep the mapping available while traffic settles

Old URLs may keep receiving requests from bookmarks, external links, and search results for a while. Keep the old-to-new mapping in place until redirect traffic settles, then review whether each old rule still needs to exist.

4. Record results for comparison

Save reports with Copy report, Download JSON, or Download CSV so a later check can be compared with the launch-day result. Signed-in users can revisit stored reports in Check History.

Parameters and Result Fields

  • URL to check: the public HTTP or HTTPS address submitted for inspection.
  • Final URL: the last reachable destination returned by the chain.
  • Redirect hop count: the number of redirects before the final response.
  • Request count: the requests used to build the report, including the final request when applicable.
  • Source URL and destination URL: the beginning and target of each reported hop.
  • Status: the HTTP response code returned for that request.
  • Type: the redirect type reported for the hop.
  • Response time: the request duration shown in milliseconds.

Examples

Domain migration with a clean one-hop redirect

An old domain page returns one permanent redirect to its matching page on the new domain. The report shows one hop, the expected new final URL, and a clear old-to-new mapping. This is the pattern to reproduce across the migration.

HTTP-to-HTTPS with an unnecessary intermediate path

An HTTP URL redirects to a temporary path, which then redirects to the final HTTPS page. The report exposes both intermediate destinations and the added response time. If the intermediate path is not required, update the first rule to point directly at the final HTTPS URL.

Post-launch monitoring catches a loop

A few weeks after launch, an old URL report shows a URL repeating in the chain and no final destination. Inspecting the rows points to a conflicting rule between the CDN and the origin server. Correct the responsible rule and retest until the report shows the intended direct path.

Common Questions

What should I put in the pre-launch URL mapping?

List every old URL that will move or be removed, and map each one to exactly one final URL. Classify the redirect type as permanent or temporary, and prepare the canonical references, internal links, and sitemap entries that will point at the final addresses.

How do I test redirects on launch day?

Enter each old URL in Redirect Chain Checker and select Check Redirects. Read the final URL and redirect hop count, inspect each hop for loops, broken targets, or HTTPS downgrades, then fix the responsible rule and retest the same URL.

Should internal links and sitemaps point at redirected URLs?

No. Internal links, navigation, canonical tags, and XML sitemap entries should point at the final canonical URL so visitors and crawlers do not request an avoidable redirect. Use the Checker on representative URLs to verify the result.

How do I monitor a migration after launch?

Re-test representative old URLs, watch for loops, broken targets, and HTTPS downgrades, keep the old-to-new mapping available while traffic settles, and save reports so a later check can be compared with the launch-day result.

Can Redirect Chain Checker update my server redirect rules?

No. It follows public HTTP or HTTPS responses and reports the source, destination, status, type, and response time. Redirect rules must be changed in your web server, CDN, or application, after which you can run the check again.

Does a completed chain prove the migration is finished?

No. A working chain only shows that the public request reached a destination. Confirm the final URL is the intended page, verify canonical, internal-link, and sitemap references, and never submit private credentials, session tokens, or confidential URLs.

FAQ

What should I put in the pre-launch URL mapping?
List every old URL that will move or be removed, map each one to exactly one final URL, classify the redirect as permanent or temporary, and prepare the canonical references, internal links, and sitemap entries that will point at the final addresses.
How do I test redirects on launch day?
Enter each old URL in Redirect Chain Checker and select Check Redirects. Read the final URL and redirect hop count, inspect each hop for loops, broken targets, or HTTPS downgrades, then fix the responsible rule and retest the same URL.
Should internal links and sitemaps point at redirected URLs?
No. Internal links, navigation, canonical tags, and XML sitemap entries should point at the final canonical URL so visitors and crawlers do not request an avoidable redirect. Use the Checker on representative URLs to verify the result.
How do I monitor a migration after launch?
Re-test representative old URLs, watch for loops, broken targets, and HTTPS downgrades, keep the old-to-new mapping available while traffic settles, and save reports so a later check can be compared with the launch-day result.
Can Redirect Chain Checker update my server redirect rules?
No. It follows public HTTP or HTTPS responses and reports the source, destination, status, type, and response time. Redirect rules must be changed in your web server, CDN, or application, after which you can run the check again.
Does a completed chain prove the migration is finished?
No. A working chain only shows that the public request reached a destination. Confirm the final URL is the intended page, verify canonical, internal-link, and sitemap references, and never submit private credentials, session tokens, or confidential URLs.

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