// JS_DEBUGGER
Free Shopify JavaScript Debugger
Catch IIFE issues, Event Delegation errors, and Theme Editor lifecycle bugs. Detects 35+ Shopify-specific JavaScript patterns in seconds.
// CAPABILITIES
SHOPIFY-SPECIFIC JS ANALYSIS
IIFE Pattern Detection
Detect missing Immediately Invoked Function Expressions that cause variable leaks and Theme Editor crashes.
Event Delegation Analysis
Identify event listeners that break on Section Rendering API re-renders. Get auto-fix suggestions for delegation patterns.
Theme Editor Compatibility
Ensure your JavaScript works correctly with Shopify's Theme Editor lifecycle events and section re-rendering.
Performance Optimization
Find render-blocking scripts, unoptimized DOM queries, and memory leaks that slow down your storefront.
// RULESET
35+ RULES CHECKED
errorMissing IIFE Wrapper — global scope pollution in Theme Editor
errorDirect Event Listeners — breaks on section re-render
errorMissing DOMContentLoaded — intermittent DOM manipulation failures
warningRender-Blocking Scripts — <head> scripts without defer/async
warningjQuery Dependency — unnecessary bundle size overhead
warningNo Section Events Handler — missing shopify:section:load
// READY_TO_DEPLOY
Stop guessing. Start validating.
Catch JavaScript bugs before your clients do. Free trial — no credit card required.