Redesign & migration guide

Protect Useful Search Signals During a Website Redesign

Short answer

Export a baseline of the current site, map every old URL to its new home, keep staging out of search, test redirects and templates before and after launch, agree a rollback plan, and monitor for weeks. Expect some temporary fluctuation — no redesign can guarantee unchanged rankings.

No redesign can guarantee unchanged rankings. Google says to expect temporary ranking fluctuation during a move, and that medium-sized sites can take a few weeks or more before the new URLs replace the old ones. Google: site moves with URL changes

01
Before design starts

Export a dated baseline.

Once the old site is gone, this evidence is gone too. Tick each export as you save it.

0/9 exports saved
02
Old-to-new URL mapping

Every old URL needs a decision.

Google recommends mapping old URLs to new ones and using server-side permanent redirects that follow the map. Change a decision or a destination and watch the expected server response update.

Old URLDecisionNew URLExpected response
/services/web-design/
/about-us/
/blog/seo-tips-2019/
/web-design-pricing/
/old-promo/
/contact/
One hop

Redirect straight to the final destination. Google advises avoiding chains.

Relevant targets

Many old URLs sent to the homepage can be treated as soft 404s.

Keep them

Keep redirects for as long as possible — generally at least one year.

Example URLs are illustrative.

03
Staging access

Keep staging private — and know what changes at launch.

The rules that protect staging are the same rules that can hide the new site if they reach production.

Google: robots.txt is not a way to keep pages out of Google — use noindex or password protection. robots.txt introduction · Site moves

  • Staging passwordOn — team onlyStill on for staging
  • noindex on new templatesOn in stagingRemoved on production
  • Development robots.txt blockAllowed in stagingReplaced with final file
  • Redirect rulesWritten and testedLive on the old URLs
  • AnalyticsTest propertyProduction property
04
Deployment QA

A launch runbook, not a launch day.

Tick items off as your team works through them. The line fills as each stage is completed.

T−7 days0/3
T−1 day0/3
Launch0/3
+1 hour0/3
+24 hours0/3
05
Rollback

Decide what triggers a rollback before you launch.

Write down the triggers, the action and the owner, and keep a tagged backup of the previous release ready to restore.

If

Site-wide 5xx errors or blank pages

Then

Restore the previous release from the tagged backup

Developer
If

noindex or robots.txt block live on production

Then

Hotfix the rule immediately, then re-test with URL Inspection

Developer
If

Redirects missing or looping on key pages

Then

Re-deploy the tested redirect file; roll back if it can’t be fixed within the agreed window

Developer
If

Forms or checkout failing

Then

Roll back the affected template or switch to the fallback form

Developer + owner
If

Tracking not firing

Then

Fix tags before judging any traffic change

Marketing
06
Monitoring

Watch the handover for weeks, not hours.

Google describes the expected pattern: indexing of old URLs falls while new URLs rise, with temporary fluctuation along the way.

  • Server logs: Googlebot errors and unexpected status codes
  • Old URLs returning 404 that still get links or traffic
  • Page indexing and both sitemaps in Search Console
  • Key-page clicks and conversions against the baseline
  • Redirects still live — at least a year
Illustrative pattern — not real data
Old URLs indexed New URLs indexed
temporary fluctuation launch wk −1wk 4wk 8

Timing varies by site size; larger sites take longer. Google: site moves

FAQs

Redesign SEO questions

Straight answers, including what nobody can promise.

Yes. Missing redirects, removed content, development noindex rules left in place, broken internal links or changed templates can all cause pages to lose visibility or traffic.

No one can guarantee that. Google says to expect temporary ranking fluctuation during a move while it recrawls and reindexes the site. Good planning reduces avoidable losses; it does not freeze rankings.

Before design starts. The baseline export and URL map shape the sitemap, templates and content decisions, and are much harder to reconstruct after launch.

Yes, whenever a URL changes or a page is merged. Use server-side permanent redirects to the most relevant new page, and keep them for as long as possible — Google suggests generally at least a year.

Usually not. Google advises against redirecting many old URLs to one irrelevant destination such as the homepage; it can be treated as a soft 404. Redirect to a relevant replacement, or let the page return 404 or 410.

Yes. MTI Tech can build the baseline, URL map and redirect file, run launch QA and monitor the weeks after launch alongside the web development work.

Planning a redesign?

Bring SEO in before the first wireframe.

We build the baseline, URL map and redirect file, run launch QA and monitor the weeks after.

Talk about your redesign →
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