Load Scripts Only When Needed
Delay non-essential JavaScript and Shopify apps until after critical content has loaded.
4.8 
on 
Shopify Try Free Now
What It Does
Hyperspeed intelligently defers JavaScript and Shopify apps that aren't required for the initial page render. Scripts are loaded only when they're needed - either after critical content is displayed or when a user begins to interact with the page.
This advanced technique includes app scope control, allowing you to decide exactly which apps should load on which pages, eliminating unnecessary scripts completely on pages where they aren't used.
How It Works
Without JavaScript Deferral
JavaScript blocks rendering as it loads and executes, delaying the display of your store content and slowing down user interaction.
- All scripts load simultaneously
- Blocks page rendering during load
- Consumes bandwidth for unused features
- All apps load on every page
With JavaScript Deferral
Critical content loads first, with non-essential scripts loading only when needed, creating a faster, more responsive experience.
- Critical content loads immediately
- Scripts load non-blocking
- Apps load only when needed
- Page-specific app loading
Why It Matters
JavaScript is often the biggest performance bottleneck for Shopify stores. The average store loads 1MB+ of JavaScript, much of which isn't needed for the initial page view. Every app you install adds more scripts that load on every page - even when they're not being used.
By intelligently deferring non-essential JavaScript and controlling app loading, you dramatically reduce initial load times and improve all Core Web Vitals metrics.
Faster Initial Load
Prioritize rendering visible content first, showing users what they need to see without waiting for all scripts.
Improved Time to Interactive
Reduce JavaScript execution time, allowing users to interact with your store faster with less processing lag.
Reduced Resource Usage
Minimize bandwidth and processing power used, especially important for mobile visitors with limited resources.
Safety and Control
App compatibility is our top priority. We've engineered our JavaScript deferral to work smoothly with Shopify apps while giving you full control.
App-by-App Control
Customize which apps are deferred through an easy-to-use interface, with options to disable deferral for specific apps if needed.
Compatibility Testing
Built-in compatibility with hundreds of popular Shopify apps, with regular updates to ensure smooth performance with new apps.
One-Click Disable
Turn off JavaScript deferral with a single click if you encounter any unexpected behavior with specific apps or features.
Stop waiting for unnecessary scripts.
4.8 on Shopify Try Free Now
