If you have a healthy add-to-cart rate but checkouts trail off, the problem is almost always at the cart or the payment step. Here are the things that move the needle.
1. Show shipping cost on the cart, not at checkout
The biggest single conversion killer is "shipping cost added at the last step". Clients abandon when they feel surprised. Show shipping (or free-shipping qualification) on the cart page so they know the total before they hit the checkout button.
In Settings → Storefront, turn on "Show shipping estimate on cart".
2. Allow guest checkout
Forcing account creation before purchase loses 30-40% of would-be buyers. Allow guest checkout. We auto-create the account from the order email after the purchase completes — they get an account either way, just without the friction up front.
3. Pre-fill what you can
For repeat customers, pre-fill name, email, address, and the most-recent payment method. The fewer fields a returning customer sees, the higher their re-purchase rate. We do this by default — confirm it is on in Settings → Checkout.
4. Make the call-to-action button impossible to miss
The checkout page should have one obvious button. Not three. If you have an upsell module ("Add this related product?"), that is fine, but make sure the primary CTA still pops visually.
5. Test mobile
Most checkout drop-off happens on mobile because mobile checkout is harder. Test on a real phone, not the desktop preview. Things to look for:
- The CTA button is reachable with one thumb
- The keyboard does not obscure the field you are typing in
- The address autocomplete actually works
If anything is off, your operator can help fix it — usually a one-line CSS adjustment in the theme.
Beyond the basics
Once those five are in place, deeper optimizations include:
- Apple Pay / Google Pay buttons on the cart (skip checkout entirely)
- Express checkout for repeat customers (one tap from product page to confirmed order)
- Currency localization (showing prices in the client's local currency where supported)
These add another 5-15% in incremental conversion. They are worth doing once the basics are solid.