Methodology, Estimates & Legal Disclaimers

TurboLoad is engineered to provide Shopify merchants with transparent, verifiable storefront speed intelligence and automated remediation tools. This document explains our data sources, mathematical models, architectural boundaries, and legal disclaimers.

1. Real-User Telemetry & Core Web Vitals Methodology #

1.1 Data Sources #

TurboLoad prioritizes real-user field data over synthetic lab tests:

• Shopify Native Real User Monitoring (RUM): Telemetry aggregated directly through Shopify's native web_performance dataset via ShopifyQL.
• Google Chrome User Experience Report (CrUX): 28-day rolling field measurements collected from real Chrome browser sessions on your store's origin domain.
• Storefront Resource Timing Telemetry: Non-blocking, passive measurement of third-party script download durations and main-thread execution via the browser's standard PerformanceObserver and sendBeacon APIs.

1.2 Metric Calculations #

All Core Web Vitals metrics conform strictly to official Chromium and W3C specifications:

• Largest Contentful Paint (LCP): Measures render time of the largest visible content element (Good: ≤ 2.5s; Needs Improvement: 2.5s–4.0s; Poor: > 4.0s). Evaluated at the 75th percentile (p75) of all shopper page loads.
• Interaction to Next Paint (INP): Measures user interaction latency across clicks, taps, and keypresses (Good: ≤ 200ms; Needs Improvement: 200ms–500ms; Poor: > 500ms). Evaluated at the 75th percentile (p75).
• Cumulative Layout Shift (CLS): Measures unexpected visual layout shifts during page lifecycle (Good: ≤ 0.1; Needs Improvement: 0.1–0.25; Poor: > 0.25). Evaluated at the 75th percentile (p75).

2. Estimated Revenue Impact & Conversion Modeling (Gate 1.1.4 Compliance) #

2.1 Modeling Methodology #

TurboLoad's performance dashboard, issue reports, and speed diagnostics may display an "Estimated Revenue Recovery" or "Estimated Conversion Impact" metric. This metric is computed using an established mathematical formula derived from empirical retail speed research:

$$\text{Estimated Impact} = \text{GMV} \times 0.01 \times \left(\frac{\Delta \text{Seconds}}{0.1\text{s}}\right)$$

Where:

• $\text{GMV}$ is your store's estimated gross merchandise volume over the evaluation window.
• $\Delta \text{Seconds}$ is the measured reduction in page load latency or Largest Contentful Paint.
• $0.01$ (1%) represents the baseline conversion sensitivity factor per 100 milliseconds of speed improvement, published across independent eCommerce benchmark studies (notably Google and Deloitte Digital’s Milliseconds Make Millions retail performance study).

2.2 Factual Disclaimer & Non-Warranty #

3. Theme App Extension Architecture & Sandbox Guidelines (Gate 5.1.1 Compliance) #

Shopify enforces strict guidelines prohibiting apps from modifying live published theme files directly unless operating within authorized sandboxing boundaries. TurboLoad complies fully with these standards:

3.1 Live Storefront Operations (Theme App Extensions Only) #

All real-time storefront functionality on your active, published store runs strictly via official Shopify Theme App Extensions (extensions/speed-monitor):

• TurboLoad Monitor (monitor.liquid): Passive, zero-footprint telemetry beacon that records third-party resource timing.
• TurboLoad Optimizer (optimizer.liquid): In-browser script deferral and asset prioritization configured via merchant settings and standard Liquid app embeds.
• Zero Direct File Edits: The app embed mechanism introduces zero modified Liquid files into your published theme, allowing instantaneous deactivation or complete uninstallation with zero residual code.

3.2 Automated Theme Remediation (Isolated Draft Sandbox) #

When merchants use the TurboLoad Theme Fixer (/app/themes/fixer) to resolve code-level bottlenecks (e.g. inject preconnect hints, add lazy-loading attributes, or optimize asset delivery):

1. Cloned Draft Sandbox: TurboLoad creates an isolated duplicate of your active theme in your Shopify theme library named [TurboLoad Remediation] <Theme Name>.
2. Never Modifies Live Themes: All automated code edits, AST Liquid parses, and file updates are executed exclusively inside this unpublished draft sandbox theme.
3. Merchant Opt-in & Preview: Merchants receive an interactive side-by-side diff viewer and a 1-click preview link (?preview_theme_id=...) to test all pages, carts, and third-party widgets before making any decision.
4. Unilateral Merchant Control: The draft theme is only promoted to the live store if the merchant explicitly clicks Publish to Live Store. Merchants retain unilateral discretion to discard, export, or modify the draft theme at any time.

4. Legal & Trademark Disclaimers #

• Shopify Trademark: Shopify is a registered trademark of Shopify Inc. TurboLoad is an independent application engineered for Shopify merchants and is not affiliated with, sponsored by, or endorsed by Shopify Inc.
• Google / Chromium Trademark: Core Web Vitals, Google Chrome, PageSpeed Insights, and CrUX are trademarks or registered trademarks of Google LLC. TurboLoad utilizes public APIs and documented standards to calculate speed metrics.
• Terms of Service: For full legal terms governing the use of TurboLoad, please review our complete Terms of Service and Privacy Policy.