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Prevent SEO problems during a website deployment by checking crawl access, indexability, redirects, canonical URLs, and sitemap entries before launch—and validating them again on production afterward. If URLs or domains are changing, treat the release as a site move and prepare an old-to-new URL map; for a routine release with unchanged URLs, focus on making sure the pages remain crawlable and indexable.
Before release: establish what must stay accessible
Capture a baseline of important URLs
Before code freeze or a migration cutover, crawl or export the live site’s important URLs. Record their response codes, titles, canonical declarations, and indexability directives. This gives the team a reference for checking whether the new release preserves intended behavior.
Decide the production indexing policy
Staging environments commonly block crawlers or add noindex directives. Decide what production should allow, then review the production robots.txt, page-level meta robots tags, and HTTP X-Robots-Tag headers. Assign an owner to remove staging-only restrictions. Google specifically warns that leftover robots.txt blocks and noindex rules can interfere with a site move. See Google’s site-move guidance.
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Verify both old and new site variants in Search Console before a move. For changes involving a domain or protocol, check the relevant host and protocol variants, and make sure verification tokens or files will survive deployment. Google describes Search Console as especially useful during a site move.
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If URLs are changing, map every old address to an outcome
Choose a relevant destination—or keep a removed URL removed
Create and review an old-to-new URL map. Redirect each moved page to its closest relevant replacement; do not send unrelated URLs to the homepage. If content is deleted or merged without a suitable replacement, use an appropriate not-found or gone response rather than disguising the removal as a redirect. Google’s redirect guidance explains destination relevance and redirect behavior.
Plan direct, server-side redirects
Where possible, configure redirects on the server. Point each old URL directly to its final destination to avoid chains, loops, and extra hops. Googlebot can follow a chain of up to 10 hops, but Google advises directing users and crawlers to the final URL rather than relying on chains.
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Set canonical URLs on destination pages
Once redirects are in place, inspect the destination page’s rel="canonical". It should identify the intended canonical URL—typically the new production URL for a migrated page—rather than the old address, a staging URL, or an unintended alternate.
Prepare discovery and infrastructure for launch
Build the new sitemap
Prepare a sitemap containing the intended canonical production URLs. Check that it excludes staging addresses and stale old URLs. A sitemap can help Google discover URLs, but submission does not guarantee that a URL will be indexed. Google’s Page indexing report documentation explains how to monitor indexing status.
For hosting moves without URL changes, plan DNS timing
If the host is changing but the URLs are not, review DNS TTL with your operations team. Google suggests that teams seeking faster DNS-cache refresh consider lowering TTL to a conservative value, such as a few hours, at least a week before the move. This is guidance, not a guarantee that every resolver will update immediately; see Google’s hosting-move documentation.
Check capacity with operations
A move can increase requests to the new site as Google continues crawling while old URLs redirect. Coordinate with hosting or operations teams and monitor server performance during the transition.
At launch: verify what the public site actually serves
- Check representative old URLs. Include high-value pages and examples from each URL template. Confirm the expected response code, final destination, HTTPS behavior, and absence of redirect loops.
- Check destination pages. Inspect the HTML or rendered output for the intended canonical URL and confirm that staging-only
noindexdirectives are gone. - Check crawl controls from production. Fetch the public
robots.txtand inspect page-level meta robots and HTTP headers. A robots.txt disallow and anoindexdirective serve different purposes; verify the deployed controls against the intended production policy. - Check internal links and sitemap entries. Important links and sitemap URLs should use the new addresses where applicable. Submit the updated sitemap through Search Console when appropriate.
- For domain changes, use Change of Address where applicable. Follow the steps in Google Search Console’s Change of Address tool guidance and make sure the old homepage and canonical pages redirect to their relevant new counterparts.
After launch: crawl, monitor, and keep redirects in place
Run a production crawl
Crawl the live site and review response codes, redirect destinations, canonical URLs, and accidental crawl blocks or noindex directives. Google specifically suggests crawling to check redirects and names Screaming Frog as one possible tool. A repeatable crawl can cover more URLs and be rerun during release sign-off; manual spot checks are useful for fast, direct inspection of selected pages. Search Console adds indexing and crawl signals, but it does not replace verification of the redirects you configured.
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Review Search Console for unusual rises in not-found errors, indexing issues, or crawl errors. Use URL Inspection to investigate individual pages that appear missing. A page’s absence from the index can have a valid explanation, such as an intentional noindex or a URL that was deliberately removed, so assess each finding against the release plan.
Watch indexing and keep the transition running
Monitor the sitemap and indexing status over time, and make sure the live sitemap lists the new URLs. During a URL move, warnings about old sitemap URLs redirecting may be expected; update the sitemap rather than treating those old addresses as the new targets. Keep redirects active while the transition proceeds.
Do not use an immediate indexing snapshot as the sole pass-or-fail test. Google says that moving most pages in a medium-sized site’s index can take a few weeks; larger sites may take longer, and crawl rate varies with site size and available crawl capacity. The timing is not a guarantee. The official site-move guidance supports planning and diagnostics, not a promise that a checklist will prevent every ranking or traffic change.
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