How to redesign your Shopify store without losing sales

"Conversion went from 1.8% to 0.3% after the redesign." Versions of that sentence are a common sight in Shopify forums. The new store looks better. The orders have stopped. And nobody can say exactly what changed, because nobody wrote down what the old store was doing.

A redesign is one of the few changes that can hurt every page of your store at once. That's a reason to be careful, not a reason to avoid it. Old themes get slow, brands outgrow them, and a store that looks dated loses trust.

The short answer: record your numbers before you touch anything, keep every old URL working, and launch the new design as a test on part of your traffic before you give it to everyone. Here's how to do each step.

1. Record your numbers before you touch anything

You can't tell whether a redesign worked if you don't know where you started. Before any design work begins, take a snapshot of how the current store performs. Screenshots are fine. A spreadsheet is better.

Conversion and the funnel

Go to Analytics → Reports and open Conversion rate breakdown. It shows your funnel as four steps: sessions, added to cart, reached checkout and completed checkout.

Before you write anything down, check that bots are filtered out. Inside the report, open the panel on the right (click Controls if it's hidden) and look under Filters for Human or bot session. It should be set to Human. Since 21 September 2026 Shopify focuses the default sessions view on human visitors where the filter is available, but check it's set, because bots can make your conversion rate look worse than it is. We've covered how bots skew your conversion rate in more detail.

Record, for at least the last 30 days:

• Sessions, and the conversion rate from session to order
• The rate at each step of the funnel: added to cart, reached checkout, completed checkout
• Conversion rate on mobile and desktop separately
• Your top 10 landing pages and the conversion rate for each

One thing to watch: Shopify changed how sessions are calculated from 21 September 2026. If you compare before and after a redesign, make sure both periods fall after that date, or the change in counting will look like a change in performance.

Speed

Go to Online Store → Themes. Above your themes you'll see a summary of your store's speed based on real visits: loading speed, interactivity and visual stability, each rated good, moderate or poor. Open the full report and note where each one sits on mobile.

This report is worth keeping an eye on after launch too. Its charts mark events such as theme changes and app installs with numbered lines, so you can see whether speed moved when the new theme went live. The data can lag by up to 36 hours and only covers the last 90 days, so take your snapshot now.

Search

If organic search brings you sales, note which pages it sends people to. Your top landing pages from the list above are the ones you can least afford to break.

2. Keep your URLs and set up redirects

This is where a lot of "our traffic disappeared" stories start. Every URL that Google has indexed, that a blogger linked to, or that sits in an old email, needs to keep working after the redesign.

The good news first. On Shopify, product and collection URLs belong to the product and collection, not the theme. If you switch to a new theme and change nothing else, /products/linen-shirt stays /products/linen-shirt.

The risk comes from the changes people make alongside the redesign:

• Renaming products or collections and editing their handles (the last part of the URL).
• Merging or splitting collections, so an old collection page no longer exists.
• Deleting old pages and blog posts during a clean-up.
• Moving from another platform to Shopify, where every URL changes.

What to do

1. Export a list of your current URLs before you start. Your sitemap (yourstore.com/sitemap.xml) lists your products, collections, pages and blog posts.
2. Change handles only when you must. When you edit a handle on a product in the admin, Shopify offers to create a redirect from the old URL. Leave that ticked. Bulk edits through apps or imports may not do this for you, so check.
3. Add redirects for anything that moves or goes. Go to Content → Menus and click URL redirects. You can add them one at a time or import a CSV. Point each old URL at the closest match, not at the homepage.
4. Test the old URLs after launch. Open your top landing pages from step 1 using the old links. Each one should land on a real page, not a 404.

One rule catches people out: Shopify only redirects URLs that are broken. If the old page still exists, the redirect won't fire. So if you're replacing a page, delete or rename the old one, then add the redirect.

3. Launch it as a test, and watch speed

The riskiest way to launch a redesign is to press publish and hope. If the new design converts worse, you find out from a week of lost orders.

Shopify now has a built-in way to avoid this, called Rollouts. It's under Markets → Rollouts in your admin. You can use it to schedule a theme change for a set date and time, or to run an experiment: show the new theme to part of your visitors and the current one to the rest, then compare.

How to set it up

• Create a rollout from Markets → Rollouts and add your new theme as the change.
• Choose an experiment, not a launch. A launch makes the change permanent. An experiment compares your new design (the treatment) against your current store (the control).
• Send part of your traffic to the new design. Starting small limits the damage if something is broken. Once it looks stable, you can increase the share.
• Read the results. For a theme experiment, Shopify reports conversion rate over time, bounce rate, reached checkout rate and add to cart rate for each version.

What to know first

• Plans. Shopify's help centre says rollouts are available on Basic or higher, but experiments need the Grow plan or higher. Check your plan before you count on it.
• Limits. Rollouts don't work with vintage themes, can't change Liquid templates, and only cover the online store, not headless storefronts.
• Time. A test needs enough orders on both sides to mean anything. A low-traffic store may need to run it for weeks. Shopify's analytics page doesn't give a significance score, so don't call a winner after two days because one number looks better.

Watch speed alongside sales

New themes often arrive with heavier images, more animation and a fresh batch of apps. Keep the speed report from step 1 open during the test. If loading speed on mobile drops from good to moderate, fix that before you send everyone to the new design. And before you widen the test, place a real test order on the new theme from your phone, from product page to order confirmation.

Timing, and whether you need a full redesign

Timing matters as much as method. A redesign needs a few ordinary weeks after launch so you can compare numbers and fix what breaks. If it goes live just before your busiest season, you have the least time to notice a problem when it costs the most. So you have two options: launch early enough to get those weeks in before the peak, or wait until it's over. Pick the one your calendar allows.

And if your conversion problem lives in one place, such as product pages or checkout, you may not need a full redesign at all. Fixing the step that leaks is faster and less risky. To find it, work through our traffic but no sales checks before you commit to a new theme.

What to do next

Before your next redesign:

1. Record conversion, funnel steps, mobile versus desktop, top landing pages and speed, with bots filtered out.
2. Export your URLs and add redirects for anything that moves or goes.
3. Launch the new theme as an experiment on part of your traffic, if your plan allows it.
4. Watch the speed report during the test, not only sales.
5. Pick a launch date that leaves a few normal weeks before your busiest season, or wait until after it.

A redesign should make you money, not cost you a month of orders. If you're planning one and want a second pair of eyes on the plan, talk to us.