Are you planning a website migration (or redesign) and don’t want to mess anything up?
If you carefully go through this article and the attached checklist, you should be able to avoid an SEO disaster.
You’ll learn what are the risks of website migration and what steps you should take to minimize them as much as possible, but also, when it’s worth bringing in an SEO consultant—and when you can handle it yourself.
So, let’s get straight to the point—no fluff, just the essentials.
Download the SEO checklist: 20 website migration questions that can save you thousands of dollars
Risks of Web Migration
Website migration is a great opportunity to move your project forward – visually, in terms of user experience, or technically. At the same time, it’s a significant and often quite risky intervention, and if you dive into it without sufficient knowledge, you risk losing the most important thing – the results you’ve worked hard to build over time.
No one does a web migration to harm their business. On the contrary, the goal is to grow, keep up with the times, and reach a new level.
However, it still happens that some migrations turn out like the example shown in the image below. After the migration, the website’s organic traffic plummets, and simply restoring it to its previous state can take months – or in worse cases, years. If SEO is one of your main marketing channels, such a decline can have very serious, even existential consequences for your business.
There are several potential risks associated with a website migration. The most serious ones, however, can be divided into three categories:
- A drop in search engine traffic
- A decrease in conversion rate
- Worsened conditions for the future growth of SEO on your project
Risk Factors: 8 Most Common Reasons for a Drop in Search Rankings
| Risk Factor | Risk Level |
|---|---|
| Domain change | High Potentially very risky with the possibility of severe consequences. If redirects are properly implemented, the risk is relatively low. However, a temporary drop in traffic is often likely. |
| Change in URL or removal of pages, images, or files that previously brought traffic to the website or were linked to from other websites. | High Potentially very risky with the possibility of severe consequences. If redirects are properly implemented, the risk is relatively low. However, a temporary drop in traffic is often likely. |
| Change in the website’s information architecture – typically adjustments in internal linking of categories or other important pages, but also, for example, modifications to the original logic of the website (e.g. new category logic in the e-shop). | Medium – High It depends on the nature of the changes to the website’s information architecture. In some cases, such changes can lead to a traffic drop of several tens of percent. In other cases, the impact may be minimal or negligible. An SEO specialist can help assess the level of risk in your specific case and recommend less risky solutions. |
| A change in the content of a page that causes search engines to perceive the updated pages differently. This may involve modifications to titles, headings, textual content, images, or other elements. | Medium – High It depends on the nature and extent of changes to the content of the page. In some cases, such changes can result in a traffic drop of tens of percent. In other cases, the impact may be minimal – or even positive if content quality improves. Changes to titles or H1 headings are particularly risky. An SEO specialist can help assess the risk in your specific situation and suggest safer alternatives. |
| Change in content accessibility – content that was accessible to search engines in the original version has become inaccessible in the new version due to the technical implementation. | Medium – High It is essential to ensure that important content remains accessible to search engines in the new version of the website. Depending on how much critical content becomes inaccessible, traffic drops of up to several tens of percent may occur. An SEO specialist can help identify what qualifies as important content and how to ensure its accessibility. |
| Deterioration of performance metrics (Core Web Vitals) after a website migration | Low – Medium Although Core Web Vitals are considered a ranking factor by Google, they generally do not have a major impact on a website’s organic traffic. However, significant deterioration in these performance metrics can lead to a small decrease in traffic (typically a few percent) and may negatively affect user experience and your website’s conversion rate. |
| After switching from the staging environment to production: | |
| Forgetting to remove the so-called noindex meta tag or x-robots tag, which tells search engines not to index the website or certain parts of it. | High If not properly managed, it can result in an almost complete loss of organic traffic. |
| Forgetting to remove the Disallow directive in the robots.txt file, which prevents search engine bots from crawling the website or parts of it. | High The drop in traffic usually doesn’t occur as quickly as with a noindex tag. However, if search engines are blocked from accessing the website for an extended period, a significant decline in organic traffic can occur. |
Examples of Risk Factors Impact
Example 1: Forgotten Noindex
In the graph below (yes, it’s the same one you’ve already seen in this article), you can see a dramatic drop in organic traffic from Google – almost down to zero – caused by forgetting to remove the noindex meta tag after moving the site from the staging environment to production.
Although, after fixing this mistake, the pages gradually began to be reindexed and traffic started to rise again, roughly four months after the drop it still hadn’t reached even 50% of the pre-migration traffic level.
Graph showing a sudden drop in traffic due to a forgotten noindex, followed by gradual growth after fixing the issue.
A seemingly small technical error like this can cost you a substantial amount of money—not only in lost revenue but also in additional expenses required to regain the lost traffic.
In practice, we’ve seen several cases where a client decided to handle their website migration on their own and only contacted us for help after their site’s search rankings collapsed post-migartion. In such situations, speed is key – the sooner the issue is fixed, the less severe the negative impact.
If addressed quickly, it’s usually possible to restore the site to its original state without major interventions. However, if the fix comes much later, getting back to the previous level can take months or even years.
To give you a clearer idea, here’s an approximate table showing how long it might take to restore traffic to its original level in the event of an accidental site deindexing.
| When was the error fixed? | How long does it take to restore traffic? |
|---|---|
| Immediately after deployment to production | The impact may not even be noticeable |
| Approximately 2 weeks after deployment to production, following a noticeable, abrupt decline in traffic. | The process of restoring traffic can take several months, and in some cases, even over a year. |
| After more than 2 months from deployment to production. | The process of restoring traffic will be very similar to starting SEO from scratch. |
Example 2: Changing Content and URL
In the graph below, you can see a drop in organic Google traffic after a website migration affecting one of the page types.
Graph showing a moderate decline in traffic caused by a change in both the URL and the page content.
In this case, the drop was caused by a combination of two risk factors:
- A change in the page template
- A change in the URL format
The decline occurred despite the fact that the original URL format was correctly redirected to the new one from the very start.
As you can see, the impact of these risk factors is not as severe as in the case of the forgotten noindex tag. However, in some cases, it can still mean more than a 20% loss in organic traffic (even if often only temporary).
For websites with high organic traffic that directly generates sales, such a drop can amount to losses in the tens of thousands of dollars per year. That’s why you should always think very carefully about whether changing a page’s content – or its URL – is truly necessary.
How to Minimize Negative Impacts
Minimize Changes
In URL Structure
Whenever a URL change is not strictly necessary, keep the original format. If a change is unavoidable, ensure proper redirection (using status code 301 or 308) from the original URL to its new variant.
In Internal Linking
Preserve as many internal links as possible in the page content, header, and footer; breadcrumb navigation links; pagination links; cross-linking between related products or articles; tags; and similar elements.
In Website Information Architecture
Unless absolutely necessary, avoid removing existing page types or creating new ones. Maintain the hierarchical structure of categories and subcategories as much as possible.
In Page Content
Keep existing content (title, headings, text, images, files, etc.) wherever possible, or enhance and improve it if needed. Be especially cautious when changing titles and headings – ideally, don’t modify them at all during the migration phase.
In Content Accessibility
Ensure that important content remains accessible to search engines:
- Don’t hide content, that was previously directly available, under tabs, modal windows, sliders, or “Read more” elements.
- Don’t require an action (like clicking or scrolling—typically via onclick or onscroll events) to display content that was previously visible.
- Maintain direct access to high-resolution images in the page’s source code.
- Ensure the site’s content is accessible to search engines without the need to render JavaScript. Not all search engines can render JavaScript, and even those that can don’t always do it.
The least risky website change is one where everything stays the same except for minor visual tweaks—like updating the logo or changing colors.
Always keep in mind the core principle: The bigger the change, the greater the risks.
If changes are unavoidable, consider whether everything really needs to be done at once, or if the updates can be spread out over time and implemented in several steps. Whenever possible, opt for gradual changes instead of one large overhaul. This approach minimizes the risk of negative impacts and makes it easier to identify problems if they occur.
Ensure Indexability and Accessibility of Content for Search Engines
If the development environment was protected from indexing using a noindex tag or an x-robots-tag in the header, remind the developer to remove these tags when moving the site to production. The same applies if crawling was blocked via robots.txt.
Once the new version is live, perform a complete crawl of the website to ensure that noindex is not present on any page that should be indexed.
Plan for the Future Growth of Your Website
When choosing a CMS and the technology stack for your new website, think about the project’s long-term growth and the need for essential adjustments down the line.
Basic website management tasks—such as editing a page’s HTML, updating titles, meta descriptions, structured snippets, tags, managing redirects, adding or editing images, and similar changes—should be manageable by an administrator without requiring a developer.
This approach will help ensure that website maintenance doesn’t become overly expensive in the future and that development costs don’t become so high that necessary changes are skipped, causing your SEO to stagnate.
Often, the best choice is to use a well-known open-source solution—such as WordPress—that already meets most of these requirements out of the box, or can be extended easily with the right plugins.
In most cases, we don’t recommend a fully custom-built solution (since it’s often unnecessary and significantly more expensive). We also advise against using any proprietary CMS that is created and managed by a single vendor, as this creates dependency on that specific company. By choosing a well-known, established CMS or framework, you’ll make it easier not only to build the new site but also to manage it in the future—and to find someone qualified to take over its maintenance if needed.
A Drop in Traffic Is Not Inevitable
It is possible to go through a migration without losing traffic – although in certain circumstances, you should still be prepared for it. At Spotibo, we’ve participated in dozens of website migrations and redesigns. Time and again, our experience has shown that if everything is done correctly, there doesn’t have to be any drop in traffic at all. In fact, we’ve often seen the opposite – where a migration not only avoided losses but actually improved the site’s organic traffic.
That said, in some cases, a certain decline in traffic (at least temporarily) can be expected. This is especially true when it’s not possible to preserve the original content, URLs, or internal linking structure on the new version of the site to a sufficient extent.
When Is It Worth Bringing in an Expert?
SEO for a website migration is like walking through a minefield –
even with theoretical preparation, it’s still a risky adventure. Having someone by your side who knows exactly where the traps are makes the journey much safer.
If SEO doesn’t bring you any real results, you have nothing to lose, and there’s no point giving it extra attention. But the more important it is to your business, the more carefully you should approach the entire process.
Ask yourself this fundamental question:
If you lost 10%, 20%, 30%, or even 50% of your SEO performance for a year, how much money would that be?
This is the first thing we always consider in order to balance the amount of work with the potential benefit.
If every percentage point of traffic is worth thousands of dollars, we fight for every single one. But not every detail is always worth the effort. Let’s look at a two examples:
SEO Generates $500 / Month
You’ve never gone deep into the topic of SEO for migration, but you’ve read this article and understand the key principles and what pitfalls to avoid. In this case, hiring an SEO consultant might not make sense.
Even if you made a mistake and lost 20% of your organic traffic, that would be roughly $100/month in lost revenue. Hiring a consultant might save you that $100/month, but if their fee is $2,000, it’s questionable whether avoiding that 20% drop would really pay off.
SEO Generates $5,000+ / Month
In this case, even a small mistake could cost you thousands of dollars per year. Hiring an experienced expert – someone who has already dealt with countless hidden issues – will almost certainly pay for itself many times over.
How Much Does SEO for a Migration Cost?
The price depends on several factors, such as the size and complexity of your site, and how big a change you’re making to the existing setup (for example, whether the original URLs remain unchanged or are being replaced). These and other factors have a direct impact on the final cost.
That’s why the price range can be quite broad. In our case, the service typically ranges from €700 to €4,000 ($800 – $4500)
Contact us if you’re interested in a personalized quote tailored to the specifics of your project — this will give you a clear idea of the expected costs.
