How to redesign a website without losing your rankings

The pattern

Traffic falls twenty to sixty per cent in the fortnight after launch. The design is better, the site is faster, and organic sessions have dropped anyway. In almost every case the cause is one of four things: URLs changed without redirects, ranking content was cut for aesthetic reasons, the staging site's noindex directive shipped to production, or internal linking collapsed when the navigation was simplified.

What to do before launch

Crawl the existing site and export every URL with its organic traffic and backlinks. Map each one to its destination on the new site. Preserve the content that ranks, even if the design team finds it long — you can restructure it, but do not delete it. Keep title tags and headings unless you have a specific reason to change them, and change them one at a time afterwards rather than all at once.

Launch day checklist

Verify robots.txt and meta robots directives. Confirm redirects resolve in a single hop, not a chain. Check canonical tags point to live URLs. Submit the new sitemap. Confirm analytics and conversion tracking fire correctly, because a tracking gap during launch week makes it impossible to diagnose anything that follows.

The first ninety days

Expect some fluctuation for two to four weeks. Monitor crawl errors, index coverage and the top fifty landing pages by previous traffic. If a specific page has lost visibility, compare it against its previous version — usually something was removed. Resist making broad changes in the first month; you will not be able to tell what caused what.