realjsonviewer
Zero-Upload Guarantee

Privacy Architecture.

How realjsonviewer protects your data by executing everything client-side in your browser.

Our Absolute Privacy Commitment

When you use realjsonviewer to inspect, format, validate, compare, or convert JSON payloads, your data never leaves your computer. We do not transmit your input to any backend server, cloud worker, or third-party API.

1. Client-Side Processing Architecture

Unlike legacy online formatters that proxy payloads through remote server endpoints, realjsonviewer is built as a static, frontend-first client island. Every function is compiled to client-side JavaScript executing in your web browser tab.

2. Local Browser Storage & History

If you use the optional Local History feature, history records are stored exclusively inside your browser's localStorage sandbox on your physical device. You can purge all stored history records at any time with 1 click.

3. Telemetry & Analytics Policy

Any anonymous telemetry collected is strictly operational (e.g. page views or tool button clicks). We never capture, inspect, or attach your actual JSON payload data or strings to any analytics event.

Related JSON Developer Tools.

Explore our suite of fast, private developer utilities designed for productivity.

JSON Viewer

Core

Interactive tree viewer with lazy expansion, type colors, and path copying.

Open Tool

JSON Formatter

Pretty-print JSON with 2-space, 4-space, tabs, and key sorting.

Open Tool

JSON Validator

Strict syntax checker with character-exact line/col error location.

Open Tool

JSON Minifier

Compress JSON payloads with instant size reduction calculations.

Open Tool

JSON Diff

Compare two JSON objects side-by-side with added/removed/changed highlighting.

Open Tool

JSONPath Tester

Query and filter deeply nested JSON payloads in real-time.

Open Tool