How to migrate a website without losing the rankings you already earned.

Crawl and export everything before anything changes

Before a single line of the new site goes live, crawl the existing site completely and export every indexed URL, its title, meta description, canonical tag, and current ranking position. This is your baseline and your inventory, and you cannot build an honest redirect map without it.

Teams that skip this step almost always discover, weeks after launch, that a category of pages generating meaningful traffic was quietly dropped because nobody thought to check whether the new site's information architecture had a home for it.

Build a one-to-one redirect map, not a blanket redirect to the homepage

Redirecting every old URL to the new homepage is the single most common cause of post-migration ranking collapse. Every old URL needs a specific new destination that serves genuinely equivalent content, mapped individually rather than in bulk pattern rules that assume structural symmetry that does not exist.

Where a page genuinely has no equivalent on the new site, a 410 or a well-considered 404 is more honest than forcing a redirect to a loosely related page. Google devalues redirects to irrelevant content faster than most teams expect.

Preserve internal linking patterns, not just URLs

A page can keep its URL and still lose rankings if the new site's navigation and internal links no longer point to it with the same frequency and anchor text variety. Internal link equity is part of what earned the ranking in the first place, and a redesign that flattens navigation depth often strips pages of the internal signals that supported them.

Audit which pages currently receive the most internal links and make sure the new site's architecture preserves or improves that pattern rather than burying previously well-linked pages three clicks deeper.

Stage the launch and monitor daily for the first three weeks

Launch to a staging environment first, verify the redirect map against your crawl export, and only then flip the live domain. For the first three weeks after launch, check indexation status, crawl errors, and ranking movement daily rather than weekly, because early issues compound if left uncaught.

Keep the old site's XML sitemap available temporarily and submit both old and new sitemaps in Search Console so Google can process the redirect map efficiently instead of discovering it page by page over months.

Expect a temporary dip and know what recovery looks like

Even a well-executed migration typically shows a short dip in rankings while Google reprocesses the site's signals under new URLs. What separates a normal dip from a real problem is the shape of the recovery: a healthy migration recovers within four to eight weeks, while a broken one keeps declining or plateaus low.