JSON Viewer
Stop staring at confusing brackets and endless strings of code. Our JSON Viewer is a powerful, interactive explorer that transforms dense, raw JSON data into a clean, navigable tree structure. Whether you are inspecting complex API responses from a mobile app, auditing a large database export, or simply trying to understand a third-party configuration file, this tool provides the visual clarity you need. It allows you to expand and collapse nested objects and arrays at will, making even the most deeply-nested payloads easy to traverse. Best of all, it operates 100% locally in your browser, ensuring that your sensitive tokens, user data, and proprietary configurations never leave your machine.
# About This Tool
A JSON Viewer (or Tree Explorer) is a specialized parsing utility that translates the linear, text-based JavaScript Object Notation (JSON) format into a hierarchical, interactive tree. It identifies data types (like Strings, Numbers, and Booleans) and organizes them into parent-child relationships that humans can easily navigate. By providing a 'logical map' of the data, a JSON viewer allows developers to quickly isolate specific keys and identify structural anomalies without the clutter of raw code formatting.
Stop staring at confusing brackets and endless strings of code. Our JSON Viewer is a powerful, interactive explorer that transforms dense, raw JSON data into a clean, navigable tree structure. Whether you are inspecting complex API responses from a mobile app, auditing a large database export, or simply trying to understand a third-party configuration file, this tool provides the visual clarity you need. It allows you to expand and collapse nested objects and arrays at will, making even the most deeply-nested payloads easy to traverse. Best of all, it operates 100% locally in your browser, ensuring that your sensitive tokens, user data, and proprietary configurations never leave your machine.
# How Does JSON Viewer Work?
- 1Paste your minified or unformatted JSON string into the input area.
- 2The tool instantly parses the structure using native browser engines.
- 3Interact with the visual root node to expand objects and arrays.
- 4Hover over values to see their exact data types and copy specific paths if needed.
# Who Should Use This Tool?
Debugging complex REST and GraphQL API responses.
Inspecting deeply nested configuration files (like package-lock.json).
Understanding third-party data structures during integration.
Auditing state exports from Redux or other frontend state managers.
# Why Use This Tool?
Privacy & Security
We prioritize your privacy. All processing for the JSON Viewer occurs locally on your device. ProUtilityApp does not upload, store, or log your data, ensuring your sensitive information remains entirely under your control. Once you close the tool or perform a new task, all temporary assets are cleared from memory.
# Frequently Asked Questions
Is there a limit to how large the JSON can be?▼
Can I search for specific keys?▼
Is my data sent to a server?▼
This tool is actively maintained to support modern standards and evolving browser security.
Last updated: March 2025 • Free privacy-first browser tools.