OUR SERVICES

Every checkout
customization.

From UI extensions to Shopify Functions, we build custom checkout experiences using every tool in the Checkout Extensibility platform. One specialist team for all your checkout needs.

Explore Services
01

Checkout UI Extensions

Custom React components that integrate seamlessly into checkout. Trust badges, product upsells, loyalty displays, gift options, and branded information blocks—tailored to your exact specifications.

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Includes

  • Trust badges & security icons
  • Product upsells & cross-sells
  • Loyalty program integration
  • Custom input fields
  • Dynamic content banners
02

Checkout Branding

Complete visual customization of your checkout experience. Typography, colors, spacing, corner radius, and form styling that maintains your brand identity at every step of the purchase flow.

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Includes

  • Custom typography
  • Brand color palette
  • Spacing & layout control
  • Form field styling
  • Logo placement & sizing
03

Payment Customization

Shopify Functions for dynamic payment method ordering, conditional visibility, and cart-based rules. Show the right payment options to the right customers at the right time.

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Includes

  • Payment method ordering
  • Conditional visibility rules
  • Cart-based logic
  • Customer segment targeting
  • Geographic restrictions
04

Delivery Customization

Custom shipping logic using Shopify Functions. Dynamic rate calculations, location-based options, delivery date promises, and branded shipping displays that set clear expectations.

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Includes

  • Dynamic rate calculations
  • Delivery date promises
  • Location-based options
  • Rate hiding & renaming
  • Free shipping thresholds
05

Post-Purchase Extensions

Extend the experience beyond checkout. Thank you page customization, one-click upsells, survey collection, account creation prompts, and order status enhancements.

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Includes

  • Thank you page customization
  • One-click upsells
  • Customer surveys
  • Account creation prompts
  • Referral program integration
06

Validation & Logic

Custom validation functions for address verification, fraud prevention rules, inventory checks, and business logic enforcement. Ensure data quality without adding friction.

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Includes

  • Age verification
  • Address validation
  • Cart quantity limits
  • Fraud prevention rules
  • Business policy enforcement
BUILT ON CHECKOUT EXTENSIBILITY

Shopify's official
customization platform.

We use Checkout Extensibility—Shopify's secure, supported framework for checkout customization. Your customizations are upgrade-safe, performant, and built to last.

Secure & Compliant

Extensions run in sandboxed environments. Your checkout stays PCI compliant and secure.

Lightning Fast

Shopify Functions execute in under 5ms. Your checkout stays fast regardless of custom logic.

Upgrade Safe

Unlike checkout.liquid, extensibility-based customizations survive Shopify updates.

Ready to customize
your checkout?

Tell us about your Shopify Plus store and the checkout experience you want to create. We'll discuss what's possible with Checkout Extensibility and how we can help.

Free initial consultation Shopify Plus only Custom solutions

Or email us directly: hello@thecheckoutagency.com