Privacy Policy — SchemaGuard Pro v3.0 (GMC 2026 & GEO Live Auditor)

Effective Date: November 11, 2026 • Extension Version: 3.0.0 (Manifest V3) • Developer: SchemaGuard Engineering

1. Zero Personal Data Collection LOCAL-FIRST

SchemaGuard Pro v3.0 processes all storefront structured data 100% locally inside your web browser. We do not collect, log, store on external servers, rent, or sell any personally identifiable information (PII), browsing history, session cookies, Shopify Admin credentials, customer records, or analytics telemetry.

2. Single Purpose & On-Demand Execution LEAST PRIVILEGE

The extension never runs persistent background content scripts across your tabs (zero <all_urls> permissions). DOM inspection occurs strictly on demand when you click the SchemaGuard Pro v3.0 toolbar icon on an active Shopify OS 2.0 or e-commerce product page.

3. Chrome Manifest V3 Permissions & Data Handling Breakdown TRANSPARENT DISCLOSURE
  • activeTab & scripting: Used exclusively when you click the extension icon to read public <script type="application/ld+json"> graphs, same-origin public /products/<handle>.js variant inventory/barcodes, and standard OpenGraph/HTML5 metadata in the active tab to calculate your 0–100 GMC 2026 score and generate local JSON-LD / Shopify OS 2.0 .liquid patches.
  • storage (chrome.storage.local): Stores only local user preferences on your own device: per-domain return/shipping policy values (sg_policy_<hostname>), your 3-scan Free Trial counter, and verified license status.
  • alarms & Host Permission (https://api.gumroad.com/*): When you activate a Pro License Key purchased from https://vothanh1.gumroad.com/l/istvro, the extension sends an HTTPS POST request containing only product_id and license_key to Gumroad's official API (https://api.gumroad.com/v2/licenses/verify). Every 72 hours, chrome.alarms re-validates active keys with increment_uses_count: "false" without sending any store URL or browsing data.
  • Zero Remote Code: 100% of JavaScript, CSS, HTML, and icons are packaged locally inside the extension archive. No external CDN scripts, eval(), or remote code execution is ever used.
4. Chrome Web Store User Data Policy & Limited Use Compliance LIMITED USE COMPLIANT

The use of information received from Google APIs and Chrome Extension APIs adheres strictly to the Chrome Web Store User Data Policy, including the Limited Use requirements. Users may clear all locally stored preferences at any time by removing the extension or clearing extension storage in chrome://extensions.