JSON Viewer & Validator

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Format, minify, and validate JSON data instantly in your browser with real-time error reporting.

Processed locally in your browser. Data is never uploaded.
Offline Ready•Zero Uploads
Paste valid JSON to view tree
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How to Use This Tool

  1. 1Paste your raw JSON string into the editor.
  2. 2The tool will instantly validate the JSON and highlight any syntax errors.
  3. 3Click 'Format' to pretty-print or 'Minify' to compress the JSON string.
  4. 4Copy the result or save it as a .json file.

Quick Examples

Standard JSON

{"name": "Developer", "skills": ["React", "Next.js"]}

Frequently Asked Questions

1 questions answered
Yes, all parsing and formatting happens locally on your device. Nothing is sent to our servers.

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