Redesign a Website Without Losing SEO

A new design can make a site faster, clearer and better at turning visitors into enquiries. It can also wipe out years of search traffic in a week if the launch is handled carelessly. The damage almost always comes from the same few causes: old URLs that stop working, pages that ranked being removed or cut down, and tracking that breaks so no one notices until much later.

This guide sets out the steps that prevent those problems. It draws on Google’s guidance on site moves with URL changes, which applies to any redesign where addresses change.

Why redesigns lose search traffic

Search engines rank individual pages, not sites. Each URL has built up signals over time: links from other sites, a history of clicks, and an understanding of what it is about. When a redesign changes that URL without a redirect, the signals have nowhere to go and the page drops out. When a ranking page is merged, shortened or deleted, the reason it ranked may go with it.

Step 1: Build a content inventory

Before any design work, list every URL the current site has. Google suggests pulling old URLs from your sitemaps, server logs, analytics, the Search Console links report and your content management system, including images and other files.

For each URL, record:

• Organic clicks and impressions from Search Console over at least the last year.
• Sessions and conversions from analytics.
• Links from other sites, where you can see them.
• Its fate in the new site: keep, merge, rewrite or remove.

Pages with traffic, conversions or links should be kept, or merged into a page that covers the same topic. Remove pages only if they have none of these and serve no purpose.

Step 2: Write the redirect map

The redirect map is a spreadsheet with two columns: old URL and new URL. Google’s guidance is to use server-side permanent redirects (301 or 308), redirect each old URL straight to its final destination, and avoid chains. It suggests keeping chains to “no more than 3 and fewer than 5” hops.

Rules for a clean map:

• Map one to one where a page has a direct replacement.
• Where pages are merged, point each old URL at the page that now covers its topic.
• Do not send large numbers of old URLs to the home page. Google advises against redirecting many pages to an unrelated page.
• Let genuinely removed content return a 404 or 410.
• Keep URLs unchanged wherever you can. It is the simplest redirect of all.

Step 3: Check everything on staging

Build the new site on a staging address that search engines cannot index, then test it before launch:

• Every old URL in the map returns a single 301 to the right page.
• Page titles, meta descriptions and headings carried over or improved for each kept page.
• Structured data still present and matching the visible text.
• Internal links point to final URLs, not to redirects.
• Image file names and alt text kept for images that bring search traffic.
• Page speed and mobile layout checked on the pages that matter most.

Make a note of every setting that blocks indexing on staging, such as a robots.txt disallow, a noindex tag or password protection, because each one must be removed at launch.

Step 4: Launch day in Search Console

On launch day:

1. Remove the staging blocks and confirm the live robots.txt allows crawling.
2. Test a sample of old URLs from the redirect map in a browser.
3. Submit a sitemap of the new URLs in Search Console. Google suggests keeping the old sitemap for a while to monitor the move; warnings that its URLs redirect are expected.
4. Use the URL Inspection tool on your most important pages.
5. If, and only if, you have moved to a new domain or subdomain, submit a Change of Address for the old property. Google says it is not needed for HTTP to HTTPS, www changes or path changes on the same domain.

If the redesign also moves the site to new hosting, our guide to moving a website to a new host without downtime covers DNS, email and SSL.

Step 5: Keep analytics continuous

A redesign is a common moment for tracking to break, because the theme or template that held the tag is replaced. Keep the same Google Analytics property and data stream rather than creating new ones, so before and after figures sit in one report. Google’s GA4 setup guide explains that the measurement ID identifies your web stream and that the Google tag must be on every page.

• The same measurement ID is on every page of the new site.
• Conversion events, such as form submissions and purchases, still fire, tested by hand.
• Any event names that changed are recorded, so reports can be compared.
• An annotation or note marks the launch date.

Step 6: Monitor for the following months

Google says that for medium-sized sites it can take “a few weeks or more” for new URLs to replace old ones, and longer for large sites. During that time:

• Watch the Search Console page indexing and performance reports week by week.
• Check for 404 errors on URLs that should have redirected, and add them to the map.
• Compare organic clicks and conversions with the same period before launch.
• Keep redirects in place. Google advises keeping them “generally at least 1 year”; leaving them permanently is simpler.

How Hostlyx handles redesigns

Hostlyx is a Zorixo Services company. Our delivery team is in Bengaluru, India, and UK customers are invoiced in GBP by Zorixo Ventures Ltd, a UK company, through Stripe. Our website redesign service includes the content inventory, redirect map and launch checks described here, with technical SEO and web analytics handled by the same team.

If you are planning a redesign, send us your current site and what you want to change and we will reply with a fixed written quote in GBP, with the SEO protection steps included in the scope.