Redesigns are where hard-won rankings quietly disappear. Five checks that protect your traffic before a single page is rebuilt.
Redesigns break more traffic than algorithms do
Every agency has seen it: a site launches looking far better than the one it replaced, and within a fortnight organic traffic has halved. The design was not the problem. The problem is that a redesign changes URLs, headings, internal links and page speed all at once, and search engines re-evaluate everything simultaneously.
1. Export every URL that currently earns traffic
Before anything is designed, pull a full list of URLs from Search Console and your analytics, sorted by sessions and by ranking keywords. This list is the thing you are protecting. Any page on it that disappears without a redirect is traffic you have chosen to give away.
2. Build the new structure around what already works
If a page ranks well, its URL, title and heading structure are evidence about what search engines have rewarded. That is not a reason to freeze the site in place, but it is a reason to start the new information architecture from the existing one rather than from a blank page.
3. Map redirects one to one
Redirecting everything to the homepage is the single most common migration mistake. Each retired URL should point to the closest equivalent on the new site. Where there is no equivalent, that is worth knowing before launch, not after.
4. Keep the content, not just the pages
Designers reasonably want less text on a page. But if 1,200 words of genuinely useful content is cut to 300 for visual balance, expect the rankings that content earned to follow it. Move the detail further down the page rather than deleting it.
5. Benchmark speed before and after
Record Core Web Vitals on the old site so you have something to compare against. A new site that looks better and loads more slowly is a net loss, and without a benchmark nobody notices until rankings slip.
Launch quietly, then watch
Go live, submit the new sitemap, and check Search Console daily for two weeks. Crawl errors and coverage drops surface fast if you are looking. Most migration damage is recoverable in the first fortnight and much harder to undo after that.
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