> Before you A/B test button colors, get the fundamentals right: page weight, address autofill, and a payment method customers actually want to use.

Source: https://plandalf.com/blog/2026-05-15-checkout-conversion-fundamentals
Last modified: 2026-05-15

Checkout

# Three things every checkout should do before you optimize anything

Before you A/B test button colors, get the fundamentals right: page weight, address autofill, and a payment method customers actually want to use.

**Plandalf Team**May 15, 20261 min read

Most checkout teardowns we run end the same way: the team is debating button copy, and the real issue is that the page takes four seconds to interactively respond to a click.

Before you A/B test anything on checkout, get these three right.

## 1\. Page weight

A checkout that takes more than two seconds to become interactive on a mid-tier mobile network is leaving conversion on the table. The fix is usually obvious once you look: third-party analytics scripts, an over-eager chat widget, fonts that block render.

## 2\. Address autofill

If your address field doesn’t accept the browser’s saved address with one tap, you’ve added five seconds of typing for every customer. This is one of the highest-ROI fixes available and takes about an hour.

## 3\. The right payment methods

In some markets, offering only cards costs you 15–30% of potential revenue. Look at where your customers are. If a meaningful share are in regions that prefer wallets or local rails, add them through [payment options](https://plandalf.com/features/payment-options).

* * *

If you’re using [Plandalf hosted checkout](https://plandalf.com/docs/offers/hosted-checkout), the first two are handled by default and [PayPal](https://plandalf.com/platforms/paypal) slots in alongside [Stripe](https://plandalf.com/platforms/stripe) with a couple of clicks.

Filed under[Checkout](https://plandalf.com/blog/tag/checkout)[Conversion](https://plandalf.com/blog/tag/conversion)

Written by Plandalf Team

The team building Plandalf.

Where this lives in Plandalf

[**Checkouts**The branded sales flow for launches with moving parts.See Checkouts](https://plandalf.com/products/checkouts)

Keep reading

## More from the blog.

1.  [February 19, 20253 min readCheckoutHow Bonjoro increased SaaS conversions by 40% with checkout experimentsThe Bonjoro upgrade experiment that led to Plandalf: a feature-led offer, an in-product payment flow, and a reported lift from a 10–12% baseline to 16.6%.](https://plandalf.com/blog/2025-02-19-how-bonjoro-increased-saas-conversions-by-40-with-low-code-checkout-flow)
2.  [September 3, 20243 min readCheckoutFive checkout handoffs worth getting right with StripeChoose the right plan, prepare customers for payment, connect checkout sessions to purchases, deliver the upgrade, and return people to their work.](https://plandalf.com/blog/2024-09-03-the-hidden-levers-of-stripe-checkout)
3.  [September 15, 20243 min readPaywallWhat Canva's 2024 paywall gets right about upgradesA close look at Canva upgrade screens captured in 2024: premium feature cues, contextual offers, product previews, and a clear path back to the work.](https://plandalf.com/blog/2024-09-15-canva-paywall-masterclass)

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