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Checkout optimization checklist: 30 checks before you blame the traffic

A free checkout optimization checklist: costs, delivery, guest checkout, forms, payment, trust, errors, mobile and accessibility. Tick it online, then test.

Use this checklist in the Wonder phase: it finds questions, not answers. It’s built around the reasons shoppers give most often for abandoning a checkout, such as extra costs, slow delivery, forced accounts and long or confusing forms (Baymard Institute).

How to use it

  1. Open your checkout on a phone, in a private window, as a new customer.
  2. Add a typical product and go all the way to the payment step.
  3. Tick what’s true. For each unticked item, note what you saw and where.
  4. Check your funnel: which step loses the most people? Start with the unticked items on that step.
  5. Turn the strongest findings into hypotheses and score them with PXL.

Notes

  • Not everything needs a test. Missing labels, broken autofill or error messages that wipe the form are bugs. Fix them.
  • Your customers may differ. Survey data comes from broad shopper panels. Check your own exit survey answers before deciding what matters most.
  • For the full method, read checkout optimization.

The checklist

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1. Total cost, with no surprises
2. Delivery
3. Accounts
4. Forms
5. Payment and trust
6. Errors
7. Mobile and accessibility

Sources (2)

  1. 50 Cart Abandonment Rate Statistics 2026. Baymard Institute. Accessed 12 November 2026.
  2. Web Content Accessibility Guidelines (WCAG) 2.2. W3C. Accessed 4 November 2026.

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