Zoombie
Published
4 min read
A website migration can mean a new host, a new design, a new structure, or a new domain. Whatever changes, search rankings are often at risk. Pages move, links break, and search engines need time to understand the new site. With a clear plan, most of that risk can be avoided.
This guide explains how to protect SEO during a migration, from planning and redirects to checks after launch.
Plan before anything moves
Start with a full list of current pages and their URLs. Note the most important pages: those that bring traffic, enquiries, or sales. These pages deserve the most care during the move.
Also record current rankings and traffic for key pages, so you can compare results after launch. Without a baseline, it is hard to know whether a drop is a real problem or normal short-term fluctuation.
Map every old URL to a new one
Redirects are the most important part of a migration. Every old URL that mattered should redirect to the most relevant new page, not just the homepage. A redirect to an unrelated page frustrates visitors and wastes the value of the old page.
Use permanent redirects where the move is permanent. Test them before launch and again after. A single broken redirect on a key page can cost more traffic than many small issues combined.
Keep content and structure as stable as possible
Try not to change everything at once. If the design, structure, content, and URLs all change together, it is hard to find the cause of any problem. Keep titles, headings, and key content as close as possible to the original, unless there is a clear reason to change them.
If the site structure must change, make sure internal links point to the new URLs. Outdated internal links create extra redirects and confusion. The same care that helps teams migrate a website to a new host safely also applies to larger migrations.
Check technical basics after launch
After launch, check that key pages load correctly, that redirects work, and that search engines can crawl the new site. Look for broken links, missing pages, and errors in search tools. Fix urgent problems first, starting with the most important pages.
Also check that the sitemap reflects the new URLs and that old URLs are not still listed as current. A clean sitemap helps search engines discover the new structure faster. If crawl problems appear, it helps to check website crawl errors fast rather than waiting for traffic to fall further.
Monitor, but do not panic
Some fluctuation after a migration is normal. Search engines need time to process changes, and rankings may move before settling. Compare data over weeks, not days, and focus on trends for key pages.
If a key page drops sharply and stays down, investigate that page first. Check its redirect, content, links, and indexing. Most migration problems have a specific cause that can be fixed once it is found.
Conclusion
Protecting SEO during a migration is mostly about planning and checking. Map URLs carefully, use relevant redirects, keep important content stable, and test thoroughly after launch. With that discipline, a migration can improve a site without losing the search visibility it worked hard to earn.
Frequently asked questions
What is a website migration?
It is a significant change to a website, such as a new host, design, structure, platform, or domain, that can affect how search engines find and rank pages.
Should old URLs redirect to the homepage?
No, except in rare cases. Redirect each old URL to the most relevant new page so visitors and search engines reach the right content.
How long does ranking recovery take?
It varies, but allow several weeks for search engines to process changes. Focus on trends rather than daily movements.
Should I change content during a migration?
Avoid large content changes at the same time if possible. Keeping content stable makes it easier to find and fix migration problems.
What should I check first after launch?
Check redirects, key pages, crawl errors, and the sitemap. Start with the pages that bring the most traffic or enquiries.
