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๐Ÿ—‚๏ธ JSON Formatter & Viewer

Paste any JSON to instantly prettify, minify, or explore it as a collapsible tree. Real-time syntax error detection included.

JSON Input
Enter JSON above to see the formatted output here
Enter valid JSON above to see the output here.
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What is a JSON Formatter & Viewer?

JSON (JavaScript Object Notation) is the most widely used lightweight data format for exchanging information between web APIs and applications. A JSON formatter transforms compressed or hard-to-read JSON strings into an indented, human-readable format and immediately detects syntax errors. The tree view visually represents nested objects and arrays, making it easy to navigate complex structures. It is an essential tool for debugging API responses, editing configuration files, and log analysis.

Common Use Cases

๐Ÿ”
API Response Debugging
Instantly prettify JSON from REST or GraphQL APIs and use tree view to find the exact field you need.
๐Ÿ“ฆ
Config File Editing
Validate and format package.json, tsconfig.json, and other config files for readability.
๐Ÿ“‰
Minification
Compress JSON before production deployment to reduce network payload size and improve performance.
๐ŸŒณ
Tree Structure Navigation
Explore deeply nested JSON with collapsible tree nodes to quickly find any key.

How to Use

  1. 1
    Paste JSON
    Paste your JSON string into the left editor, or click the Sample button to load example data and explore how the tool works.
  2. 2
    Select View Mode
    Choose Pretty (indented), Tree (collapsible hierarchy), or Minify (whitespace-stripped) from the top of the right panel โ€” output updates instantly.
  3. 3
    Check for Errors
    The status bar at the bottom of the input panel shows โœ“ for valid JSON or the exact parser error message so you can locate and fix issues quickly.
  4. 4
    Copy & Use
    Click the copy button to grab the formatted result and paste it directly into your code editor, API tool, or documentation.

Frequently Asked Questions