Checkout Extensions That Lift Revenue Without Risk
Custom UI extensions, post-purchase upsells, trust badges, gift messaging, loyalty redemption, and urgency timers, all built within Shopify's native checkout framework. No hacks, no compliance risk, no lost sales.
Trusted by growing Shopify brands
Every extension,
fully Shopify-approved
Shopify's Checkout Extensibility lets you customise checkout without touching native code, which means every upgrade, every compliance update, and every new Shopify feature just works automatically. We build UI extensions using Shopify's official APIs: checkout extensions, post-purchase extensions, and Thank You page extensions. Your checkout stays fast, your buyers stay confident, and your conversion stays protected — and every change we ship is measurable from day one.
Explore checkout solutionsEvery touchpoint in your checkout, optimised
From the first payment field to the post-purchase confirmation, we customise every stage of the Shopify checkout to lift AOV, reduce drop-off, and build buyer confidence.
Checkout optimisation that pays for itself
Real outcomes from checkout projects we have delivered, averaged across our Shopify Plus client base.
Audit first. Build what the data says.
Checkout changes without data are guesswork. We start with your actual drop-off points and build extensions that solve real problems, not hypothetical ones.
Checkout Audit
We record sessions, map your funnel drop-off in Shopify checkout analytics, and identify every point where buyers hesitate or leave before completing payment.
Week 1Strategy & UX Design
We design the extension layout, trust signal placement, upsell positioning, and gift messaging flow. Every element justified by data from the audit phase.
Week 1–2Build Extensions
We build using Shopify's official Checkout UI Extensions API: no scripts, no unsupported hacks. Your checkout stays compliant and upgrade-safe.
Week 2–5Test & Optimise
We run before-and-after CVR tracking, monitor AOV impact from post-purchase upsells, and iterate on any extension not performing to benchmark within 30 days.
Week 5–6Checkout Extensibility: Subscription Upsell, Trust Badges & Offer Countdown
Woxer needed their checkout to work harder within Shopify's native framework. We built Shopify checkout UI extensions: a subscription upsell offering recurring purchase discounts, inline trust badges at the payment step, and an offer countdown tied to their campaign schedule. All built natively — no scripts, no compliance risk.
Checkout 2.0 Migration: Progress Bar, Trust Badges & Upsell
Flewd's legacy checkout couldn't support native customisation. We migrated to Shopify Checkout 2.0 and added a focused extension layer: a cart progress bar encouraging higher spend, trust badges at the payment step, and a checkout upsell for a complementary product. Conversion improved within the first week of launch.
Trusted by growing Shopify brands around the world
"We’ve had a great experience working with this ecommerce agency. The team is professional, responsive, and highly skilled in development. They understood our requirements quickly and delivered high-quality work that improved both the functionality and performance of our store. Highly recommended for anyone looking for a strong ecommerce development team."
"They've helped out with emergency fast fixing and full rebuilds of high-traffic e-commerce brands without ever an issue - they match submitted designs and never deliver with any bugs. They're also incredibly affordable for small, independent businesses. Highly recommend this team and have passed them to work with several colleagues."
"UpSolite is my go to agency anytime I need development work or programing on my Shopify site. Working with them has been a great experience. I can explain what I want in simple terms and they take it and quickly make it happen. Every time their solutions worked exactly how I wanted and communication along the way was professional. They even handled in couple emergency requested in record time. I recommend UpSolite and continue to use them for my business."
Ready to turn your checkout into a revenue engine?
Book a free 30-minute checkout audit. We will review your current checkout flow, identify the biggest drop-off points, and show you exactly what extensions would move the needle.