Shopify Checkout Customization for Plus Stores
Shopify checkout customization now means Checkout UI extensions, Functions and post-purchase pages instead of the old checkout.liquid file. Omeiro builds trust badges, upsell blocks, shipping rules and validation that fit the modern checkout and keep working through Shopify updates.
A sample layout, on desktop and phone
A made-up example of the kind of page this work is for: a clear heading, one main button and the key sections. The same page reflows on a phone.
A made-up layout to show the kind of structure we work on for Shopify checkout customization. It is not a client site. Your design follows your brand, your pages and your content.
What you get with Shopify checkout customization
Modern Checkout UI extensions, bespoke post-purchase upsells, custom shipping rules, and custom checkout validation replacing legacy checkout.liquid.
Basic Package
1 Checkout UI extension (e.g. trust badges or upsell block). 4-day delivery, 2 revisions.
Standard Package
3 UI extensions; post-purchase upsell page. 8-day delivery, 3 revisions.
Premium Package
Full checkout customization, shipping/validation Functions, checkout.liquid migration. 14-day delivery, 5 revisions.
Clear brief first
We confirm what you need before work starts, so the scope is clear on both sides.
Revisions listed
Each package shows its revision rounds. A round is one list of changes sent together.
Yours once paid
Copyright of the final work passes to you once the order is paid in full.
Hosting, domains and any paid theme, plugin or app are bought in your name and paid by you, so they stay with your business.
How our Shopify checkout customization works
Audit checkout
We list your current customizations and what Shopify still lets you change.
Build extensions
UI blocks, Functions and the post-purchase page are coded to your spec.
Test orders
Test checkouts verify the behavior across devices and discount types.
Go live
Extensions are published, and you receive a note of what each one does.
Planning checkout extensibility changes safely
Checkout extensibility changes touch the most valuable page on your store, so planning matters. List every customisation your checkout has today, including scripts, apps and tracking, then decide which are still needed. Some old tweaks have official replacements, others are better dropped, and a few need a different approach such as a Function instead of front-end code.
Test with real scenarios, not only a simple order. Try discount codes, gift cards, multiple shipping rates, international addresses and mobile devices, because a rule that works on one path can fail on another. Share your plan type, current apps and examples of the behaviour you want. A careful checkout extensibility project also records what each extension does, so future changes are easy to review.
In short
- Delivery in 4 to 14 days, by package.
- Fixed price, shown before you order.
- Stores still running customizations in checkout.liquid.
- Merchants hiring a checkout extensibility developer for upsells and badges.
- Copyright yours after full payment.
Shopify Checkout Customization: common questions
How much does Shopify checkout customization cost?
Prices are fixed and shown by package on our Shopify Checkout Customization pricing page, so you see the full price before you order. You can also ask for a custom quote.
How long does checkout extensibility developer take?
Delivery depends on the package: Basic 4-day delivery; Standard 8-day delivery; Premium 14-day delivery.
What is included in the Basic Package?
The Basic Package includes: 1 Checkout UI extension (e.g. trust badges or upsell block). Higher packages add more scope, revisions and support.
Can I get a custom Shopify checkout UI extensions package?
Yes. If none of the packages fits, use the custom package form on our pricing page to describe what you need, and our team sends you a fixed price.
Do I need Shopify Plus?
Some checkout features are Plus-only, so we confirm your plan before building.
Can you migrate my checkout.liquid changes?
Premium includes a checkout.liquid migration.
Will extensions slow checkout?
Extensions are kept light and tested on mobile.
Can I add upsells after purchase?
Standard includes a post-purchase upsell page.
What is a Shopify Function?
A Function is a small piece of backend logic that customises things like discounts, shipping options or validation inside Shopify. It runs on Shopify's infrastructure, so it does not slow your storefront.
Who owns the final work?
Copyright of the final work passes to you once the order is paid in full. Paid fonts, stock files or licences, if used, are licensed in your name.
Ready to start your Shopify checkout customization?
Compare the packages and pick the one that fits. Not sure which? Write to us and we will help you choose.