JSON Formatter & Validator
Paste your JSON below to beautify, minify, or validate it. Everything runs in your browser — your data never leaves your device.
Input JSON
Output
About the JSON Formatter & Validator
JSON (JavaScript Object Notation) is the most widely used data interchange format on the web. Whether you're debugging an API response, reviewing configuration files, or sharing data with a colleague, having a well-formatted JSON string makes all the difference.
What this tool does
- Beautify / Format: Adds indentation and line breaks to make JSON human-readable.
- Minify: Strips all whitespace to produce the smallest possible valid JSON string — ideal before sending over a network.
- Validate: Checks whether the input is syntactically valid JSON and reports the exact error position if not.
- Sort keys: Alphabetically sorts object keys for easier comparison.
Privacy
All processing happens entirely in your browser using JavaScript. Your JSON data is never uploaded to any server.