Checkout Detective — Pixel & Cart Debugger

Diagnose ecommerce checkout issues, broken tracking pixels, network failures, and JavaScript errors.

Debug Your Shopify Store Before Customers Find the Bug Checkout Detective is a Chrome extension for Shopify merchants, developers, agencies, CRO specialists, and media buyers who need to find checkout, tracking, JavaScript, and network problems quickly. Run a live customer journey on your storefront and see what is actually happening from product view to checkout. ➡️ What Checkout Detective checks 🛒 Checkout & Add to Cart ✅ Track Product View → Add to Cart → Cart → Checkout → Purchase ✅ Detect failed or blocked Add to Cart actions ✅ Identify checkout navigation problems ✅ Monitor cart and checkout state transitions ✅ Find issues caused by theme and third-party app conflicts 🎯 Meta Pixel & Conversion Tracking ✅ Verify Meta Pixel events across the funnel ✅ Check ViewContent, AddToCart, InitiateCheckout, and Purchase ✅ Detect duplicate Pixel IDs and duplicate events ✅ Check event values, currency, and content IDs ✅ Identify missing purchase signals 📊 Google Analytics 4 & GTM ✅ Verify GA4 ecommerce events ✅ Check view_item, add_to_cart, begin_checkout, and purchase ✅ Inspect Google Tag and dataLayer activity ✅ Detect conflicting Measurement IDs and broken tracking flows ⚡ JavaScript Error Detection ✅ Capture uncaught JavaScript exceptions ✅ Correlate errors with user actions ✅ Identify which click or interaction triggered an error ✅ View script origins and stack traces ✅ Find JavaScript problems that can block checkout 🌐 Network & AJAX Monitoring ✅ Inspect storefront network activity ✅ Monitor Shopify Cart API requests ✅ Check /cart/add.js and /cart/change.js requests ✅ Detect HTTP errors and failed requests ✅ Identify 429 rate-limit responses ✅ Flag slow requests that may affect the shopping experience 🧩 Third-Party Script Audit ✅ Identify scripts loaded by apps and services ✅ Categorize third-party vendors ✅ Find scripts returning 404 or 500 errors ✅ Spot unnecessary background requests ✅ Investigate possible app and theme conflicts ➡️ Health Score & Developer Reports After an investigation, Checkout Detective generates a 0–100 funnel health score and summarizes detected problems. ⬇️ Export diagnostic information as: ✅ HTML reports ✅ Markdown bug tickets ✅ Network failures ✅ JavaScript errors and stack traces ✅ Pixel and analytics verification results 📎 Share the report with your developer, Shopify agency, CRO team, or marketing team instead of sending screenshots with no technical context. 🛠️ Built for Shopify teams Checkout Detective is useful for: ➡️ Shopify merchants - Check your store after installing apps or changing themes - Test checkout before launching an important campaign - Investigate unexpected Add to Cart or checkout problems ➡️ Shopify developers - Reproduce frontend and checkout issues - Correlate user actions with JavaScript errors - Inspect network failures and third-party scripts ➡️ Shopify agencies - Audit client storefronts - Perform pre-launch and post-deployment QA - Export client-ready diagnostic reports ➡️ Media buyers - Verify Meta Pixel and GA4 purchase tracking - Check conversion signals before launching or scaling campaigns ➡️ CRO specialists - Investigate technical issues affecting the shopping journey - Find problems that standard analytics dashboards don't explain ❌ No code injection. No proxy setup. 1️⃣. Checkout Detective runs as a browser extension while you investigate a storefront. It does not require installing an app on the Shopify store or modifying your theme. 2️⃣. Open a Shopify storefront, launch the extension, start an investigation, browse the store normally, and review the diagnostic results. 📴 Privacy-focused architecture 1️⃣. Checkout Detective is designed to analyze storefront activity locally in the browser. 2️⃣. The extension includes PII sanitization for diagnostic data and is designed not to store or transmit sensitive customer information. 3️⃣. No customer passwords, payment card information, or other sensitive credentials are required to use the extension. ➡️ Compatibility Designed for Shopify storefront debugging, including Shopify and Shopify Plus stores, custom themes, Online Store 2.0 storefronts, and headless storefronts. Also compatible with Chromium-based browsers including Chrome, Brave, Microsoft Edge, and Opera. 🟢 Free to use. No account required. Find checkout bugs, broken tracking, JavaScript errors, network failures, and third-party script conflicts before they become customer problems. Learn more: https://checkoutdetective.pages.dev/