How to change your website without losing your Google rankings

A new website is usually good news: more modern, faster, easier to manage. But if it isn't planned, it can also be the moment a business loses much of its Google traffic overnight. It happens more often than you'd think: page addresses change, content that ranked disappears and Google finds errors where there used to be pages.

The good news is that it's avoidable. This guide explains how to change your website (redesign, new platform or new domain) while protecting your rankings.

Why migrations lose rankings

• URLs change and the old ones return 404 errors. Google and external links point to pages that no longer exist.
• Content is removed or cut back that answered certain searches well.
• Well-crafted titles, descriptions or structured data get lost.
• The new site blocks Google by mistake (a noindex tag or a staging robots.txt that makes it to production).
• Speed or the mobile experience gets worse.

Before the change

1. Inventory your URLs

List every page on the current site. Useful sources:

• The current sitemap.
• Google Search Console: pages that get impressions and clicks.
• Google Analytics: pages that get visits.
• Pages that receive links from other sites.

Flag the most important ones: those that bring visits, enquiries or sales.

2. Decide what happens to each page

For each old URL, choose one of three outcomes:

• It stays at the same address (ideal where possible).
• It moves: redirect it with a 301 to the equivalent new page.
• It goes away: redirect it to the most similar page (for example, the category). Only leave a 404 if there's nothing related.

Avoid redirecting everything to the home page: to Google, that's almost the same as an error.

3. Keep what works

On pages that rank well, keep the main content, titles and descriptions, or improve them. A visual redesign doesn't have to change the text Google already values.

4. Build the new site on a staging environment

Block the staging environment so Google doesn't index it (ideally with a password). And make a note to remove that block at launch.

Launch day

1. Turn on the 301 redirects for every URL in your inventory.
2. Remove any staging blocks (noindex, robots.txt, password).
3. Check that the site loads on HTTPS and on a single version of the domain.
4. Test the redirects for your most important URLs, one by one or with a tool that checks the whole list.
5. Submit the new sitemap in Google Search Console and Bing Webmaster Tools.
6. If you changed domain, use Search Console's Change of Address tool.

After the change

Over the following weeks, check:

• Search Console: 404 errors, unindexed pages and the trend in clicks and impressions. See how to use Google Search Console.
• Your most important pages: that they appear on Google at their new address.
• Analytics: that visits, enquiries and sales hold steady.
• Speed of the new site on mobile.

Some fluctuation in the first few weeks is normal while Google processes the redirects. A sharp, sustained drop means there's a problem to track down.

Checklist

• URL inventory with the most important pages flagged.
• Redirect map: every old URL with its destination.
• Content, titles and descriptions of key pages kept or improved.
• Structured data migrated.
• Staging environment blocked from Google.
• 301 redirects live and tested.
• Staging blocks removed in production.
• New sitemap submitted to Google and Bing.
• Search Console monitored for at least a month.

Frequently asked questions

How long should redirects stay in place?

As long as possible, ideally forever. External links and people's bookmarks keep pointing to the old URLs for years.

Will I lose rankings even if I do everything right?

There may be a temporary dip while Google processes the changes. With correct redirects and preserved content, sites usually recover within a few weeks, and often improve if the new site is faster and clearer.

What if I've already changed my site and lost traffic?

It can still be fixed. In Search Console, find the pages that got clicks before the change, check what happens at those URLs today and set up the missing redirects.

Does changing platform affect SEO?

The platform itself isn't the problem; changing URLs, content or structure without a plan is.

Changing your website?

We review your current site, prepare the redirect map and support the launch. Start with an SEO audit or tell us about your project. If you also need the new site, our sister team WEB.CR designs and builds websites with SEO built in from day one.