Privacy Policy

JSON Prism ("we", "our", or "the app") is a fully client-side, browser-based JSON utility. We are committed to your privacy. This policy explains what data is — and is not — collected when you use JSON Prism.

JSON Prism processes all JSON data entirely in your browser. We do not:

• Transmit, upload, or store any JSON content you paste or type
• Collect personal information or create user accounts
• Use cookies for tracking or advertising
• Share any data with third parties
• Run any server-side processing of your data

JSON Prism stores data only on your device using localStorage for theme preference and IndexedDB for tabs, editor content, settings, notes, and saved JSON (larger payloads use async storage so the page stays responsive).

• Theme preference (light or dark) — key: json-viewer-theme
• Tabs and editor content — stored in IndexedDB under the app's origin
• Settings (editor, tree, formatting preferences) — stored in IndexedDB
• Notes (rich-text annotations beside your session) — stored in IndexedDB

This data never leaves your device and can be cleared at any time by clearing site data from your browser.

When you use the Share feature, your JSON is compressed and encoded directly into the URL fragment (the portion after #). Browsers do not send URL fragments to servers, so the payload never reaches any server — the link is decoded locally by whoever opens it.

If you click Create short link in the Share panel, the already-encoded payload (not your original JSON) is sent to our own Cloudflare Worker and stored in Cloudflare Workers KV for 30 days, then automatically deleted. The short link service is never contacted unless you explicitly press that button. We store only the compressed payload — we never see your original JSON.

• Stored value: the compressed, base64url-encoded payload only
• Retention: 30 days, auto-deleted
• Data location: Cloudflare KV (globally distributed edge storage)
• No IP addresses, user agents, or request metadata are logged

We use Google Tag Manager for aggregate, privacy-preserving usage analytics (page views, feature usage). GTM loads after the page is interactive to avoid blocking performance. No JSON content or identifiable user data is sent to analytics.

JSON Prism is built with open-source libraries (Next.js, Monaco Editor, Tailwind CSS, shadcn/ui, and others). These run entirely in the browser and do not transmit your JSON content.

We may update this policy from time to time. Changes are effective immediately upon posting. Continued use of the app constitutes acceptance of the revised policy.

For questions, please open an issue on the project's GitHub repository.