How to Migrate a Website Without Losing SEO
Website migrations — new domain, new platform, new URLs — are high-risk for SEO. Here’s how to move without losing your rankings and traffic.
Whether you’re rebranding, changing platforms, or moving a site you just acquired, a migration is one of the riskiest things you can do to your search traffic. Done carefully it’s seamless; done carelessly it can wipe out years of ranking overnight.
The cardinal rule: preserve URLs and redirects
Every existing URL that has value must either stay the same or 301-redirect to its closest equivalent on the new site. A 301 tells search engines “this moved permanently here”, passing along most of the ranking signal. Broken or missing redirects are the number one cause of migration traffic loss.
A safe migration sequence
- Crawl and inventory. Map every existing URL and its traffic/value before you touch anything.
- Build the redirect map. Old URL → new URL, one to one, for everything that matters.
- Preserve on-page signals. Keep titles, headings, content and internal links intact where possible.
- Stage and test. Verify redirects, canonical tags and crawlability before going live.
- Launch, then monitor. Submit the new sitemap, watch crawl errors and rankings closely for weeks.
Especially important when you buy a site
Acquiring a website and moving it to your infrastructure is a migration — and mishandling it can destroy the value you just paid for. If you’re buying, factor migration risk into your plan and your price; see how to buy a website safely and the due diligence checklist.
Expect a wobble, watch the trend
Even clean migrations often see a short dip as search engines re-process the site. What matters is that it recovers within weeks. Sustained loss means something — usually a redirect gap — needs fixing.
Frequently Asked Questions
Will I lose rankings when I migrate?
A short-term dip is common even with a clean migration, as search engines re-crawl and re-index. With proper 301 redirects and preserved content, rankings typically recover within weeks. Sustained loss usually points to a redirect or technical gap.
What’s the single most important step?
A complete, one-to-one 301 redirect map from every valuable old URL to its new equivalent. Missing or broken redirects are the leading cause of traffic loss during migrations.
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