Migrating your online store without losing SEO

Moving your store to a new platform can be the right call. Maybe your old system is expensive to maintain, hard to update or missing features you need. But a replatforming project has one risk that catches owners off guard: you can lose search traffic you spent years earning.

That loss is usually avoidable. Search engines are good at following a well-planned move. They struggle when old pages simply vanish. This guide covers the plan we would follow for any store migration, whether you are moving to Shopify, WooCommerce or something custom.

Why migrations lose traffic

Every product, collection and blog post on your current store has a web address. Google has those addresses indexed, other sites link to them and customers have them bookmarked. Most platforms structure URLs differently. Shopify, for example, uses fixed paths such as /products/ and /collections/. So when you switch, almost every address changes.

If the old addresses return a "page not found" error, Google eventually drops them and the ranking history attached to them goes too. The fix is to tell search engines, page by page, where each old address now lives.

Build a complete URL map

Google's own site move guidance starts here: make a list of your current URLs and decide where each one should go. Pull URLs from several sources, because no single source has them all:

• Your current XML sitemap.
• A crawl of your live site using a site crawler tool.
• Your analytics, sorted by landing pages with traffic.
• Google Search Console, for pages that earn impressions and clicks.
• Pages with backlinks from other websites.

Put them in a spreadsheet with an "old URL" column and a "new URL" column. Each old page should point to its closest match: product to product, category to category. If a product is discontinued, point it to the most relevant category rather than the home page. Mass redirects to the home page tend to be treated like missing pages.

Set up 301 redirects properly

A 301 redirect is a permanent forwarding instruction. When a browser or search engine asks for the old address, the server sends it to the new one. Google recommends server-side permanent redirects such as 301 or 308, not tricks done in JavaScript.

Most platforms let you bulk import redirects from your spreadsheet. Shopify, for instance, accepts a CSV upload under its URL redirects settings. A few rules matter here. Avoid chains, where one redirect leads to another and then another, because they slow pages down and Google may stop following them. And keep your redirects in place for a long time. Google's guidance is to keep them as long as possible, generally at least one year.

Migrate your data, not just your products

Products, variants, prices, customers and order history are the obvious items. But the SEO value often sits in details that migration tools skip:

• Page titles and meta descriptions you have written over the years.
• Image alt text and product descriptions.
• Blog posts and their publish dates.
• Customer reviews, which are often stored in a separate app.
• Structured data such as product ratings and prices shown in search results.

Customer accounts deserve a plan too. Passwords usually cannot be copied between platforms, so customers may need to reset or activate their accounts. A friendly email ahead of launch saves a wave of support tickets.

Test before you flip the switch

Build the new store on a staging address and test it properly before launch. Run your redirect spreadsheet through a checker to confirm every old URL lands on the right page with a single hop. Place real test orders, including taxes, shipping and discounts. Check that your analytics and conversion tracking fire on the new checkout.

Monitor closely after launch

On launch day, submit your new sitemap in Google Search Console and spot check your top pages and redirects. Over the following weeks, watch the indexing and page reports for errors, and check your analytics for pages that lost traffic. Fix broken redirects as you find them.

Expect some movement. Google says it can take a few weeks or more for a medium-sized site to show the new URLs in place of the old ones, and rankings can fluctuate during that time. A short dip is normal. A steady decline after a month or two is a signal to dig in.

Our honest recommendation: treat the URL map as the most important deliverable in the whole project, not an afterthought. If whoever is building your new store cannot show you that spreadsheet before launch, ask for it.

Written by Vishal Singh

Founder of Byte Harbor and a senior frontend and web platform engineer. He builds websites, custom software and AI automation for businesses across Canada and the US.

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