Introduction

Manage and build Shopify Functions with Function Junction.

Function Junction lets you extend the capabilities of your Shopify store by building custom backend logic using Shopify Functions. With Function Junction, you can create dynamic discounts, shipping rules, bundles, and more without writing code.

You can start quickly using ready-made templates or build functions from scratch to meet your store’s unique needs. Function Junction also supports migrating existing scripts so you can replace Shopify Scripts before they are deprecated in 2026.

Functions run securely on Shopify’s backend, ensuring high performance and low latency. The app provides tools for testing, debugging, and monitoring so you can manage your functions confidently.

Function Junction is available to all Shopify plans and helps you add advanced capabilities to your store while keeping your data private.

Shopify Plus:

Shopify Plus merchants can contact support for help migrating existing scripts to Shopify Functions before script tags are deprecated in 2026.

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What are functions?

Shopify functions let you customize backend logic for your store. Function types include:

• Product discounts

• Order discounts

• Shipping rules

• Wholesale discounts

• Bundles

Function Junction helps you build and manage these functions without coding, using an easy-to-use builder with dropdown menus and clear logic options. Functions run securely on Shopify’s backend.