Shopify Checkout UI Extension Services
Customize your Shopify Plus checkout with Checkout UI Extensions—secure, future-proof checkout customizations that lift AOV and conversion without touching core checkout.
Why it matters
A platform built for growth
Better Checkout Experience
Tailor checkout to your brand and customer behavior for a smoother path to purchase.
Higher Conversion
Reduce cart abandonment with targeted offers, discounts, and upsells at the right moments.
Secure & Compliant
Built on Shopify's native framework with PCI compliance and platform reliability.
Own Your Checkout on Shopify Plus
Checkout UI Extensions for a checkout that converts harder.
Why Checkout UI Extensions — Checkout is where sales happen—and for Shopify Plus brands, it's now fully customizable. Checkout UI Extensions let you add upsells, custom fields, loyalty displays, trust signals, and delivery messaging without touching core checkout code—secure, fast, and built to survive Shopify's checkout.liquid deprecation.
How We Build It — We design and deploy checkout extensions on Shopify Functions—trust badges, custom delivery messaging, payment highlighting, conditional fields, loyalty integration, and upsells right before payment. Everything is lightweight, PCI-compliant by default, and tested across devices and payment scenarios so your checkout stays fast and reliable.
Share Your Checkout Requirements with Us.
One of our Shopify Experts will be in touch with you shortly — we respond within 6 hours.
Share your requirementsOur Expertise
What Our Checkout Extensions Deliver
Personalized Journeys
Fields, offers, and layout tailored per user segment.
Performance-First
Lightweight extensions that keep checkout fast.
Built for Shopify Plus
Following Shopify's latest Checkout Extensibility standards.
Complete QA
Tested across devices, payment scenarios, and edge cases.
PCI Compliant
Security handled within Shopify's safe ecosystem.
Post-Launch Support
Refinement, troubleshooting, and scaling after launch.
Checkout Extensibility
The Checkout Build, In Detail
- Shopify Functions integration.
- App Blocks for customization.
- Dynamic checkout updates.
- Modular rendering logic.
- Real-time data for personalized fields.
- Loyalty platform integration.
- Custom field rendering (radio, dropdowns, text).
- Checkout performance optimization.
- A/B testing analytics.
- Secure third-party API integration.
Customize What Matters Most
Checkout UI Extensions that lift AOV and conversion on Shopify Plus. Tell us about your checkout.
Book A ConsultationWhat Our Clients Say
Some kind words from our respected clients
Delivered Quality
“Kolachi Tech turned our eCommerce vision into a beautiful, high-performing reality. Their development team crafted a user-friendly platform that perfectly reflects our brand, and our customers love it.”
— Aun Ali
Professionals
“The marketing strategies implemented by Kolachi Tech have been a game-changer for us. They've managed to increase our online visibility and attract the right audience, resulting in a significant boost in our sales.”
— Cindy Matthews
Can't be happier
“Kolachi Tech is the complete package – from developing a visually stunning, intuitive online store to driving targeted traffic with savvy marketing tactics. Their services have truly propelled our online business to new heights.”
— Sara Clarke
Need Advice First?
Your checkout is where sales happen—let's make every click count. Share your goals.
Tell us about your project
Get a free Shopify consultation
Share a few details and we'll map the fastest path to revenue — no cost, no obligation.
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