How to Build a One-Page Checkout on Shopify

EasySell
2026-04-12T07:25:16+01:00

A Shopify one-page checkout compresses every field — name, address, payment — into a single screen. No page reloads, no multi-step flow, no extra chances for the customer to leave. And those extra chances matter: cart abandonment sits at 70-72% across ecommerce, climbing to 78% on mobile. Three out of four people who wanted your product changed their mind somewhere between "Add to Cart" and "Place Order."

Shopify's default checkout used to be a three-page process: information, shipping, payment. Each page load was a moment of doubt. A slow connection. A distraction. A second thought. One-page checkout compresses that entire flow into a single screen — and the data backs up why it matters. An A/B test by Elasticpath found single-page checkout produced a 21.8% higher conversion rate than a two-page version. Shopify's own data shows their one-page layout converts roughly 7.5% better than the multi-page alternative.

Shopify Already Made One-Page Checkout the Default

If you created your Shopify store recently, you might already have one-page checkout enabled. Shopify switched the default layout to one-page checkout for all new stores. You can check your current setup in Settings → Checkout in your admin panel.

If your store still uses the three-page layout, you can switch with one click — as long as you're not running legacy checkout customizations through checkout.liquid or Additional Scripts. If you are, you'll need to migrate to Checkout Extensibility first. The deadline for non-Plus stores is August 26, 2026, so this is worth addressing now rather than scrambling later.

To enable one-page checkout:

1. Go to Settings → Checkout in your Shopify admin

2. Under Checkout layout, select One-page checkout

3. Click Save

That's the entire process for stores without legacy customizations. Your shipping, payment, and customer information fields will collapse into a single scrollable page.

Why One Page Matters More for COD Stores

For stores accepting card payments, the multi-step checkout has friction — but the customer has already committed psychologically by entering their card number. COD orders don't have that commitment point. The customer isn't paying anything upfront. Every additional page is pure friction with zero sunk cost.

This is especially painful on mobile in emerging markets. Mobile traffic accounts for over 60% of ecommerce visits globally, and in COD-heavy markets like India, Pakistan, and MENA, that number is higher. Combine slow 3G/4G connections with a three-page checkout, and each page load can take 3-5 seconds. That's 9-15 seconds of waiting just to place an order the customer hasn't financially committed to.

A one-page layout eliminates those extra loads. The customer sees everything — name, phone, address, order summary — on one screen. One tap to submit. Done.

Shopify's One-Page Checkout vs. a One-Page Order Form

Shopify's native one-page checkout is a solid improvement over the three-page version. But it's still Shopify's checkout. It still routes through the cart page, still shows the standard checkout fields, and still follows Shopify's flow for payment processing.

For COD stores, there's a different approach: replacing the checkout entirely with a one-page order form embedded on the product page. Instead of Add to Cart → Cart Page → Checkout, the customer fills out a form right on the product page and submits the order in one step.

The difference matters:

Shopify one-page checkout: Customer clicks "Buy Now" → lands on a single checkout page with all fields → submits. Two pages total (product + checkout).

One-page order form: Customer fills out the form directly on the product page → submits. One page total. No redirect.

For card-payment stores, Shopify's native one-page checkout is usually enough. For COD stores where the customer just needs to enter a name, phone number, and address, an embedded order form cuts the flow down to its absolute minimum.

How to Set Up a One-Page Order Form on Shopify

If you want to go beyond Shopify's native checkout and embed the entire order flow on a single page, you'll need an app. Shopify doesn't offer this natively.

EasySell is built specifically for this — it replaces the default Buy Now button with a COD-optimized order form directly on the product page. The customer enters their details, selects quantity, and places the order without ever leaving the page.

Setup takes about 10 minutes:

1. Install the app and open the form builder

2. Choose your form layout — single-step or multi-step (for stores that want a progress indicator but still keep everything on one page)

3. Configure your fields — name, phone, address, and any custom fields you need (order notes, delivery preferences, etc.)

4. Set your order rules — minimum quantities, order limits per customer, blocked phone numbers or regions

5. Enable verification if needed — OTP via SMS or WhatsApp to filter fake COD orders before they ship

6. Publish — the form replaces the default Buy Now button on your selected products or entire store

The result is a product page that doubles as a checkout page. No cart, no redirect, no extra page loads.

5 Things That Make or Break a One-Page Checkout

Switching to one page doesn't automatically fix conversion. A cluttered one-page checkout can perform worse than a clean multi-step one. These details determine whether the change actually moves your numbers:

1. Field count. Every field you add increases abandonment. Stick to the minimum: name, phone, address, and payment method. If you're COD-only, you don't even need the payment method field. Baymard Institute research consistently shows that reducing form fields is one of the highest-impact checkout optimizations.

2. Mobile layout. Your form needs to work on a 6-inch screen with a thumb. Single-column layout. Large tap targets. No horizontal scrolling. Auto-detect city from postal code if possible — that's one less field the customer types on a tiny keyboard. For a deeper breakdown, see the mobile order form optimization guide.

3. Trust signals. On a single page, there's less space to build confidence. Add a visible order summary with product image, a clear total, and your return/exchange policy link. For COD, stating "Pay on delivery — no payment required now" reduces hesitation.

4. Speed. A one-page checkout that takes 4 seconds to load loses the advantage of being one page. Compress images, minimize scripts, and lazy-load anything below the fold. This matters double in emerging markets where average connection speeds are slower.

5. Error handling. If a customer fills out 8 fields and gets a vague "There was an error" message, they're gone. Validate fields in real-time — show a red border and specific message ("Phone number must be 10 digits") as they type, not after they submit.

How Do You Measure One-Page Checkout Performance?

Switching your checkout layout without tracking the results is guesswork. Before you change anything, record these baseline numbers from your Shopify analytics:

Checkout completion rate — how many people who reach checkout actually finish it

Cart-to-order rate — how many people who add to cart end up placing an order

Mobile vs. desktop conversion — one-page checkout usually has a bigger impact on mobile

Run the new layout for at least two weeks before comparing. Short tests get skewed by traffic fluctuations, promotions, or day-of-week patterns. If you're running a one-page order form alongside Shopify's native checkout (some stores use the order form for COD and standard checkout for card payments), compare the two completion rates directly.

The stores that see the biggest lift from one-page checkout tend to share a few traits: high mobile traffic, COD or simple payment methods, and product catalogs where customers don't need extensive deliberation before buying.

If your store fits that profile, start with Shopify's native one-page checkout toggle — it's free and takes 30 seconds. If you're running COD and want the form embedded directly on the product page, EasySell's order form gets you there without code. Either way, fewer pages means fewer exits — and the math on that is hard to argue with.