Services
E-commerce stores, themes and apps
Online stores built around what you sell: Shopify themes, product tools, custom apps, checkout rules, marketplace listings and moves from older platforms.

Our approach
A stock theme sells every product the same way: a photo, a size list and a button. Shoppers who need to know whether something fits, how it looks in their room or which version suits them either leave to find out, or buy the wrong one and send it back. We design the store around the questions your shoppers ask before they buy, and build the tools that answer them on the product page.
Most of our e-commerce work is on Shopify, and it goes past the theme: apps inside your store’s admin, discount and shipping rules at checkout, and the same product facts on Walmart, eBay, Wayfair and Google Shopping. The TACOVICI store at ledlightmirrors.com runs on all of it: a theme built for LED mirrors, Mirror Studio for placing a mirror on a bathroom wall at its real size, and one admin app for orders and marketplace listings.
What is included
Store and theme design
A Shopify theme designed around your products and built from sections your team can rearrange in the theme editor, without a developer.
Product tools
Size finders, configurators, bundles and visualizers like Mirror Studio, reading your live catalog so prices, sizes and Add to cart are real.
Custom Shopify apps
Apps in your Shopify admin for the jobs no App Store app does your way, on Shopify’s GraphQL Admin API, for your store only or for many.
Checkout and discounts
Discount, shipping and payment rules as Shopify Functions, checkout extensions, and tracking that works with Shopify’s current checkout.
Marketplaces and feeds
Walmart, eBay, Wayfair and Google Merchant Center fed from Shopify, so titles, specs and claims match everywhere a product is listed.
Catalog clean-up
Metafields, variants, spec sheets and collections put in order, with checks that stop a wrong size or claim from reaching the store.
Moving to Shopify
Products, customers and order history moved from WooCommerce, Magento, BigCommerce, Squarespace or Wix, with every old address redirected.
Speed, search and accessibility
Fast pages, product structured data for search results, and a storefront that works with a keyboard and a screen reader.
Check your store
Type your store’s address for a short report on what a visitor’s browser receives: the theme, the apps that load, page weight, product data for search and accessibility basics, each with what it means and what fixes it.
How the work runs
Built with Shopify, Liquid, Shopify Functions, GraphQL Admin API, Theme app extensions and Google Merchant Center.
Store review
An hour on your store, products and sales channels, then a written scope and a fixed price.
Design with your products
Key pages designed with your real catalog and photos, reviewed with you before anything is built.
Build on a copy
Built on an unpublished theme or a development store, shown on a preview link, never on the live store.
Launch and look after
Published at a quiet hour with redirects checked, then monthly checks and updates when Shopify changes.
Who it is for
- Stores on a stock theme whose shoppers ask the same questions before every order.
- Sellers listing the same products on Shopify and marketplaces, and fixing mismatched facts by hand.
- Stores on WooCommerce, Magento or an older Shopify theme that has become slow or hard to change.
- Stores whose Shopify Scripts or Thank you page scripts stopped working in 2026.
Questions
Not answered here?
Do you only work with Shopify?
Most of our store work is on Shopify, and it is what we recommend for most stores: checkout, payments, taxes and hosting are handled for you, and your team can edit the store without us. We also move stores to Shopify from WooCommerce, Magento, BigCommerce, Squarespace and Wix. When a business needs something a store platform does poorly, such as quotes or bookings, we build that part as a web application connected to the store.
Can you improve our current theme instead of replacing it?
Yes. Often a new product page template, a few sections or a size tool is enough. We work on an unpublished copy of your theme, show it on a preview link, and you publish it when you are happy with it.
Our Shopify Scripts or Thank you page scripts stopped working. Can you fix that?
Yes. Shopify Scripts stopped running on June 30, 2026, and scripts on the Thank you and Order status pages had to move to Shopify’s new checkout by August 2026. We rebuild discount, shipping and payment rules as Shopify Functions, and tracking as web pixels or checkout extensions, and test them on a development store before they reach customers.
Will moving to Shopify hurt our search rankings?
It should not, if the move is done carefully. Every old product, collection and page address gets a redirect to its new one, titles, descriptions and structured data carry over, and after launch we check Search Console for any page that lost its redirect.
What is a custom Shopify app, and do we need one?
An app that runs inside your Shopify admin and does a job the App Store’s apps don’t do the way you work, such as TACOVICI’s app for orders and marketplace listings. Usually it is installed on your store only. We check the App Store first, and when an existing app does the job well, we tell you to install that instead.
Can you keep our products the same on Walmart, eBay and Amazon?
We keep TACOVICI’s products in step on Walmart, eBay, Wayfair and Google Shopping, with Shopify as the one place the facts are edited. Amazon and other marketplaces with a seller API can be connected the same way; the store review says which apply to you and what each needs.
Who owns the theme and the apps?
You do. The theme and app code live in a repository in your name, and the store, its apps and your marketplace accounts stay yours. If you later work with another developer, they can pick up the code without us.
How much does a store cost?
It depends on what the first release has to do. After the store review we send a written scope with a fixed price. You keep paying Shopify, your apps and your marketplaces directly; we take no fee on sales.
Read next
- ServiceWeb applications and SaaSCustomer products, SaaS and the admin side
- ServiceMobile apps for iPhone and AndroidiPhone and Android from one codebase
- ServiceInternal tools and business systemsThe spreadsheet, turned into software
- ServiceModernizing older softwareOlder systems moved, one piece at a time
- ServiceIntegrations that keep your tools in stepAccounting, payments and payroll, connected
- ServiceReal estate websites with IDX listingsLive MLS search on your site, in your design
- ServiceDigital tablet menus for restaurantsTableside digital menus you update in minutes
Your vision. Our solutions.
What you sell, where you sell it, and what isn’t working: the theme, checkout, a marketplace or the platform itself. We reply within one business day.
Talk about your store