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Website Migration SEO Checklist: Protect URLs, Indexing and Organic Traffic

A new website can look better and still disappear from search if important URLs return 404, old redirects chain for several hops or the new templates ship with noindex rules. A migration plan protects what already works before anyone clicks the launch button.

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Best for

Website owners rebuilding a storefront, replacing a CMS or changing URL structures while preserving existing search entry pages.

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Pause if

Projects that are still deciding whether to change domains, languages or URL patterns. Freeze the scope first; multiple simultaneous changes are harder to diagnose.

Make a more informed choice

Start with a real workflow.

The sections below are designed to help you evaluate the options against your actual business rather than treating marketing claims as a purchase decision. Check the current terms directly with each provider.

01

Before launch: keep a baseline of what Google sees

Export landing pages, clicks, impressions and date ranges from Google Search Console. Save the current XML sitemap, crawl the existing site and list important URLs from analytics, internal navigation and relevant backlinks. Include blog posts, products, collections and conversion landing pages rather than only pages that appear in the main menu.

Mark the URLs with real search traffic or strong commercial value. These deserve manual verification. Record current title tags, canonical targets, indexability, structured data and the existing primary content. If a redesign replaces a useful guide with a short sales pitch, a technically perfect redirect will not preserve the content that earned its relevance.

02

Build one redirect map with no guessing

Map each important old URL to the best matching live destination. Keep the same URL when practical; when a URL must change, a permanent server-side redirect is normally appropriate. A deleted product should not be redirected to the homepage merely to avoid a 404; use a genuinely relevant replacement or a deliberate removed status.

Test the map for loops, chains and internal links that still point to old addresses. Preserve meaningful path details and avoid wildcard patterns that send unrelated pages to a single destination. Redirects should work for real visitors as well as crawlers.

03

Check launch templates, not just the homepage

Inspect a sample of the new homepage, an article, product, category, landing page and paginated view. Verify 200 statuses, correct canonical URLs, useful HTML titles, crawlable links and mobile content. Make sure staging robots.txt or noindex flags were not accidentally shipped to production.

Check the rendered HTML rather than trusting what a template editor claims. JavaScript navigation without normal anchor links can make discovery harder, and a canonical pointing every variant to the homepage can erase useful page identities. Verify that images and CSS are reachable to Googlebot.

04

Launch with a controlled checklist

Deploy when someone can monitor errors. Activate redirects, publish a sitemap of canonical indexable URLs, update internal menus and link cards, and verify that checkout and affiliate links still work. Keep a rollback snapshot of the old release and database schema.

Spot-check at least the highest-value pages with an HTTP checker or a crawler. Inspect robots.txt and response headers, including X-Robots-Tag. Avoid simultaneously changing the domain, content topic and analytics setup unless business requirements force it; separating changes reduces diagnostic guesswork.

05

Watch the following weeks and fix real errors

Use Search Console to follow indexing and performance by landing page. A short-term swing does not prove success or failure. Compare equal-length periods and segment by query or page where useful. Investigate 404 errors on URLs that previously had traffic and redirects to irrelevant targets.

Maintain a crawl list for broken internal links, unexpected canonical targets, redirect loops and duplicate templates. Fix causes rather than resubmitting the same sitemap repeatedly. When the technical setup is stable, invest in improving the pages whose content no longer satisfies their search intent.

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Decision matrix: compare before you commit

RiskHow to catch it
Old URLs return 404Compare the baseline URL inventory to live responses
Wrong canonicalInspect rendered HTML on each major template
Staging block survivesCheck robots.txt, meta robots and response headers
Internal redirectsCrawl links and identify chained hops
Missing useful contentCompare old and new copy on high-value pages
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Checklist to use in your next evaluation

Keep these questions open while reviewing product documentation, asking the provider for a quote or testing a trial.

  • Export pre-launch GSC landing-page performance
  • Crawl and save the old URL inventory
  • Map important old URLs to relevant new destinations
  • Test 301 redirects, loops and chains
  • Validate canonicals, robots, noindex and HTTP status
  • Compare mobile HTML with desktop content
  • Submit one canonical sitemap and track changes
  • Check critical partner and checkout links after launch
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Frequently asked questions

Will 301 redirects guarantee the same rankings?

No. Redirects help consolidate signals and preserve navigation, but content relevance, crawlability and search competition also influence outcomes.

Should every removed URL go to the homepage?

No. Use a contextually equivalent destination when one exists. Otherwise a real 404 or 410 can be more accurate.

How soon will Google reflect a migration?

Crawling and indexing happen over time. Watch Search Console and logs rather than assuming a fixed date for full processing.

Sources and further reading

Official documentation is a starting point for checking product features, not proof of hands-on testing.

Transparency: This page is a decision framework, not a hands-on benchmark or a promise of results. H24D7 also operates some of the projects mentioned here. Learn more in our affiliate disclosure.
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Now compare the actual offering.

Use the checklist above to check current availability, prices and terms before committing.

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