64% of Websites Hold Fewer Page-One Google Rankings After Switching Platforms

A home services company replaces its ageing website with a new one on a different platform. Launch day goes smoothly. Over the next few months, though, fewer calls come in from Google, and when the owner finally checks, the website has dropped off Google's first page for searches it used to own and visits from search are down by about one in seven.

A platform switch, moving a website from one content management or ecommerce system to another, almost always comes with a redesign, new page addresses and new templates. Organic traffic, the visits a website gets from unpaid Google search results, is the largest free source of new customers for most small and mid-size businesses, and almost all search clicks go to the first page of results. Any page that loses its redirect, its text or its internal links is at risk of losing its place there.

Most websites have less of both after a switch. 64.3% of websites that switched platforms rank for fewer first-page keywords afterwards, and 60.5% have less Google organic traffic within months. The declines built up month by month rather than arriving on launch day, which is why many owners notice them late. A third of websites gained rankings, which shows a decline is not built into the move.

We found 200 websites whose content management or ecommerce platform changed completely between the September 2025 and March 2026 HTTP Archive crawls, a public project that records the technology behind millions of websites each month. For each one we collected monthly Google US ranking history and monthly estimates of Google US organic traffic from September 2024 to September 2026. The traffic analysis covers the 185 websites with at least 10 estimated visits a month before the switch; the ranking analysis covers the 129 that ranked on the first page for at least 5 keywords before the switch.

A website's pre-switch level is its average for June to August 2025, before any of the switches. For traffic we compared that with its average for December 2025 to March 2026, the months when the switches were under way and just after; for rankings, with its average for April to September 2026. A first-page keyword is a search term for which the website appears in positions 1 to 10 of Google's results. Estimated traffic is calculated from where a website ranks on Google and how often those searches happen. The median is the middle website: half did better, half did worse.

The median website ranks for 16.1% fewer first-page keywords after the move. Each lost keyword is a search where the website no longer shows up where customers look. The declines are uneven: 46.5% of websites that switched lost more than a quarter of their first-page rankings.

A switch is a fresh start for search engines. Google has to find the new pages, match them to the old ones through redirects and decide whether the new content is as useful as what it replaced. Pages that keep their address or get a correct redirect, and keep their content, tend to keep their rankings; pages that do not start over.

The median website had 14.4% less estimated organic traffic, about one visit in seven. For a business that gets most of its new customers from search, that is one in seven potential enquiries fewer in the months after spending money on a new website.

These are not large publishers. The median website that switched had 1,526 estimated visits a month from Google search before the move, the level of an established local business or a small online store. At that size every page matters, because a handful of service or product pages usually brings in most of the traffic.

Median organic traffic across the 185 websites fell steadily as the switches went live. It was at 95% of the pre-switch level in September 2025, 89% in October and 86% in November, recovered slightly to 90% in December and then slipped to 83% in January and 81% in March 2026.

First-page rankings across the 129 websites held at or just above their pre-switch level from September 2025 through January 2026. They then slid to 93% in March, 87% in April and 78% in June, reaching a low of 77% in July before recovering to 85% in September 2026.

The pattern is a slow leak rather than a cliff. Websites switched at different points between September 2025 and March 2026, and each one worked through its own post-launch changes in turn. The monthly figures count every change in those months, including wider movements in Google's results, alongside the switches themselves. That makes a decline easy to miss week to week, and by the time it shows up in a monthly report, several months of traffic are already gone. The partial recovery in rankings by September shows some websites winning positions back in the months after launch.

The same kinds of moves ended in gains for some websites and declines for others, and about four in ten websites kept or grew their Google traffic. A decline after a switch is common, but it is not a given.

Shopify was the most common destination, with 25 websites, followed by WordPress with 15. Results for both groups depend on how each migration was handled.

Plan the switch to protect rankings and traffic, not just to launch a new design. Before launch, export every page that ranks, gets search traffic or has backlinks, map each one to its new address and set up permanent (301) redirects. Keep the titles, headings and body copy of your best pages close to what they were, and test the redirects the day you go live.

Set a baseline before you start, then measure first-page keywords and Google traffic weekly for at least three months afterwards. A drop in page-one rankings shows up before revenue does and tells you which pages to fix. If traffic is still down after eight to twelve weeks, find the pages that lost rankings and fix those first. Our seo migration services handle the redirect map, launch testing and post-launch monitoring that protect the rankings and traffic an old website earned.

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