Zero-Server Privacy Guarantee

Privacy Policy

Last updated: January 28, 2026 · Effective across JSON Viewer Web & Mobile App

100% Local In-Browser Processing

Any JSON, YAML, XML, CSV, TOML, or text payload you paste into JSON Viewer Studio is processed entirely locally on your device. Data is never uploaded to our servers, never stored in remote databases, and never used to train AI models.

1. Introduction

Welcome to JSON Viewer Tool (“we”, “us”, or “our”), operating https://jsonviewer.tools and the JSON Viewer mobile application. This Privacy Policy outlines our transparent approach to data processing, payments, and user rights.

2. Mobile App, Google Play & Apple Store Billing

Our mobile applications use Google Play Billing (Android) and Apple In-App Purchases (iOS) to securely process subscriptions:

  • We do not collect or store credit or debit card details.
  • All financial transactions are handled end-to-end by Apple or Google.
  • We only receive cryptographic verification tokens and subscription expiration dates to activate premium features.

3. Anonymous Performance & Crash Analytics

To maintain 99.99% reliability across millions of device types, our app may collect anonymized diagnostic metadata:

  • Device architecture and operating system version (e.g. Android 15, iOS 18, macOS).
  • Crash stack traces to debug parser exceptions.
  • Anonymous feature adoption counters (e.g., number of Mermaid diagrams rendered).

No personal identities, IP addresses, or payload contents are ever attached to telemetry.

4. Third-Party Service Providers

Google Play & Apple Store
Mobile subscription verification
LemonSqueezy & Paddle
Web merchant of record payments
Cloudflare & Netlify
Static edge asset delivery
Google Analytics
Aggregated web traffic trends

5. Contact Our Privacy Office

If you have inquiries regarding our data handling or wish to request data verification: