How do Shopify Scripts work and what can they customize?

Shopify Scripts are powerful customization tools available exclusively to Shopify Plus merchants, written in Ruby and executed server-side during the checkout process.

Three Types of Scripts

Line Item Scripts

Modify cart contents and pricing by:

Creating BOGO (Buy One Get One) offers
Applying tiered discounts based on quantity
Bundling products with special pricing
Hiding or showing specific line items based on conditions

Shipping Scripts

Customize shipping options in real-time:

Offer free shipping based on cart value or customer tags
Hide expensive shipping options for specific regions
Rename shipping methods dynamically
Create custom rate calculations based on product types

Payment Scripts

Control available payment methods by:

Hiding specific payment gateways for certain products
Requiring specific payment methods for high-value orders
Customizing payment options based on customer groups
Enforcing business rules for payment selection

Implementation Process

Scripts are created using the Script Editor app, tested in development stores, and deployed to production. They run automatically on every cart update, providing instant customization without impacting page load times.

Performance & Limitations

Scripts execute in milliseconds and support complex logic with conditional statements and loops. However, they have a 10-second timeout limit and cannot access external APIs or make network calls.