# Checkout Detective

> The developer tools side panel built for Shopify and Shopify Plus merchants, CRO engineers, and media buyers to catch checkout crashes, broken Meta/GA4 pixels, and hidden revenue leaks in real time.

## Core Products & Free Diagnostic Tools
- [Checkout Detective Overview](https://checkoutdetective.pages.dev/): Non-intrusive DevTools Chrome side panel featuring 7 diagnostic engines, click-to-JS correlation, and 100% local zero-PII in-browser telemetry.
- [Interactive Revenue Leak Calculator](https://checkoutdetective.pages.dev/tools/revenue-leak-calculator/): Calculate monthly lost checkout GMV caused by checkout button delays, cart drawer freezes, and broken pixels.
- [Meta CAPI Payload Generator](https://checkoutdetective.pages.dev/tools/meta-capi-generator/): Test and generate valid Facebook Conversions API JSON payloads with SHA-256 hashing and event deduplication keys.
- [App Bloat Estimator](https://checkoutdetective.pages.dev/tools/app-bloat-estimator/): Audit the impact of third-party tracking scripts, review widgets, and apps on cart drawer latency and conversion rate.
- [Pre-Flight Checkout QA Checklist](https://checkoutdetective.pages.dev/tools/pre-flight-checklist/): An 18-point interactive QA testing checklist for Shopify Plus stores prior to BFCM and flash sales.
- [Pricing Plans](https://checkoutdetective.pages.dev/pricing/): Free Starter (5 audits/month), Pro ($19/month), and Agency ($49/month with 5 seats and white-label exports).

## Technical Documentation & Architecture Teardowns
- [Why Dawn Theme 15+ Freezes on Cart Drawer Submissions](https://checkoutdetective.pages.dev/blog/dawn-theme-cart-drawer-freeze-fix/): Deep root cause and 4-line fix for asynchronous DOM mutation conflicts.
- [Debugging Meta CAPI & Pixel Deduplication](https://checkoutdetective.pages.dev/blog/shopify-meta-capi-pixel-deduplication/): Resolving event_id parity in Shopify Web Pixel sandbox.
- [The PayPal Attribution Trap in GA4](https://checkoutdetective.pages.dev/blog/shopify-paypal-express-overwriting-ga4-utm-attribution/): Preventing PayPal Express from overwriting paid campaign UTM attribution.
- [Silent Revenue Leaks: HTTP 429 on /cart/add.js](https://checkoutdetective.pages.dev/blog/currency-converter-429-rate-limit-cart/): How currency apps trigger Shopify leaky bucket rate limiting.
- [Headless Shopify Checkout Timeouts](https://checkoutdetective.pages.dev/blog/headless-shopify-storefront-api-checkout-timeouts/): Diagnosing Storefront API and Hydrogen session drops.
- [Elevar vs Littledata vs Checkout Detective](https://checkoutdetective.pages.dev/blog/elevar-vs-littledata-vs-checkout-detective/): Comparing server-side GTM containers, cloud connectors, and in-browser DevTools telemetry.
- [Fixing Uncaught TypeError in cart.js](https://checkoutdetective.pages.dev/blog/shopify-uncaught-typeerror-cart-js-fix/): Resolving silent JavaScript exceptions that freeze checkout buttons.
- [All 26 Engineering Teardowns](https://checkoutdetective.pages.dev/blog/): Comprehensive knowledge base of Shopify checkout performance and telemetry post-mortems.

## Privacy & Compliance
- [Zero-PII Commitment & Privacy Policy](https://checkoutdetective.pages.dev/privacy/): Strict client-side processing; zero customer data collection, storage, or transmission.
- [Terms of Service](https://checkoutdetective.pages.dev/terms/): Extension license terms and merchant commitments.