Protect your SEO through a website redesign.

How does a website redesign affect SEO?

Your redesign affects your SEO through what it changes: your URLs, content, templates, internal links and indexing signals. Open your homepage and view the source (it takes thirty seconds). The title, canonical tag and headings you see there are what your new design must carry forward.

Your rankings are likely to hold when four things are true of your site. Your URLs stay the same. Your new pages carry the same main content, titles and headings, and nothing you launch blocks indexing. Your pages also load at least as fast as before. But if any of your URLs change, you are running a migration, and every URL you change needs a 301 redirect.

Google says your rankings can fluctuate while it recrawls and reindexes. On a medium-sized site, Google may take a few weeks to notice URL changes. That wait is why your before picture matters, and you can only take it now. Your baseline is one score and the evidence behind eight pillars, read from your public pages, which you compare after launch.

What should you baseline before a redesign starts?

Baseline three things before you touch anything: your search numbers by page, a crawl of your live pages, and your score on the eight pillars. Save 28 days of your Search Console clicks and impressions by page. Add your GA4 organic sessions and conversions by landing page. And pull your traffic, rankings and conversions from the last twelve months too, if you can.

Crawl your live site. Export URL, title, meta description, H1, word count, canonical and internal links for every page you have. That file becomes your redirect map. It is also your proof of what your old pages said, and you will want that proof the first time someone asks what changed (someone always asks).

Run the assessment on your current site, then save your score and your evidence for each pillar. It reads your homepage plus up to eight sampled pages, so you get a record of your headers, markup, structured data and canonical signals. Your analytics stay out of its view. So keep your own exports alongside what you save.

Which redesign changes cause ranking drops?

Your traffic most often falls because of four changes: old URLs with no 301 redirect, a leftover noindex or robots.txt block from staging, content or internal links that did not carry over, and a missing analytics tag. Open your staging site's robots.txt and look for Disallow: /. Then check your page source and your response headers for noindex and X-Robots-Tag. Google says you must remove these temporary blocks when your move starts. A block you leave on is the cheapest mistake you can avoid, and one of the costliest if you don't.

Your templates do quieter damage to your rankings. Your page builder often resets titles and meta descriptions to the page name. Your new menus and footers tend to drop links to your deep pages. And conflicting canonical tags and weaker page templates can show up as lost rankings, with no error message pointing to them.

Compare your new templates with your baseline crawl, page by page. When you run the assessment, it reads headings, canonical and robots signals on the pages it samples from your site. You get the same signals on your new site. So read them the same way.

How do you map redirects when your URLs change?

To map redirects, list each of your old URLs next to the new URL that replaces it. Then record a decision for every row: stays, moves, merges or removed. Build your table from your baseline crawl with three columns: old address, new address and decision. Send each old URL straight to its closest relevant replacement with a permanent 301 or 308. Your visitors should meet no detours (and neither should Google's crawler).

Don't send large groups of unrelated pages to your homepage. Avoid chains: you want one hop per URL. Give each of your new URLs a self-referencing canonical tag, and update your hreflang to the new URLs. Use your mapping to change your internal links from old URLs to new ones. And then save a sitemap of your new URLs, plus the list of sites linking to your old URLs, which you'll see in Search Console.

If your domain changes, you also need Search Console's Change of Address tool. Keep your old domain registered and redirecting for years, not months. Otherwise, keep every one of your redirects in place for at least a year. Remove them early and you can't easily undo it. That is a one-way door.

What do you check in the first week after launch?

In week one, confirm three things: your site blocks nothing from indexing, your old URLs each redirect once to the right page, and your analytics tag fires. Open your live /robots.txt. Then run URL Inspection, Test live URL, on your homepage and on one page per template you use. If you find a staging password, noindex tag, X-Robots-Tag header or Disallow: / rule, remove it from your site.

Crawl your live site for 4xx and 5xx errors, internal redirects, missing canonicals and noindex, then submit your sitemap of new URLs. Google says crawling your site can take a few days to a few weeks, so wait. Requesting a recrawl of the same URL again and again will not speed it up. It only gives you something to click.

Watch your Search Console daily for the first two weeks, then weekly. Compare your clicks per page with your baseline and investigate any of your top pages down more than 30%. Then run the assessment on your site again and compare each pillar with your baseline score. Look first at the pillar that moved, because that is where your answer usually starts.

When should you expect your rankings to settle?

Your rankings should settle within a few weeks if you mapped your redirects before launch. But if your drop keeps growing after a month, you probably have a technical or content cause, so look there. Chart your weekly clicks per page against your baseline and check whether the lines are flat, rising or still falling. Small fluctuations in your first two to four weeks are normal. Resist the urge to start changing things.

Your recovery time depends on the cause. If noindex or a robots.txt rule blocks your pages, expect days to a few weeks after your fix. Redirect problems usually take a few weeks as Google recrawls your pages. Content and relevance problems can take several weeks to a few months. And skipped redirect mapping is the slowest case: three to six months, and some of your authority may not fully return.

You may still see your old URLs in your results for a while. Google calls that normal. It is fine as long as your URLs still redirect, and they will drop out gradually. The fix is patience, not another change (the urge to fiddle is the real risk here).

Questions, answered.

Your next read.

1. 01Website repairDown, hacked or broken: what survives, what to rebuild.
2. 02Website audit checklistThe eight pillars as a list you can run yourself.
3. 03Headless CMS SEO auditRendering, canonicals, previews, schema from the template.