JSON Formatter and Validator
Format, validate, beautify, and minify JSON with exact syntax error pointers.
Input Raw JSON
Formatted JSON
About JSON Formatter and Validator
Clean up unformatted JSON payloads, fix indentation, validate syntax, and pinpoint exact line and column numbers of parse errors without server uploads.
Accepted Input:Raw JSON string or file up to 500,000 characters
Output Result:Beautified (2 or 4 spaces) or minified valid JSON
Privacy Guarantee:Runs 100% in your browser. API responses, keys, and JSON payloads never leave your computer.
How It Works
1Step 1
Paste your raw JSON payload into the editor.
2Step 2
Click Format to beautify with 2 or 4 spaces, or Minify to compact it.
3Step 3
Inspect syntax error messages with line and column indicators if the JSON is invalid.
Common Use Cases
Formatting raw API responses and webhooks for readability.
Validating configuration files (tsconfig, package.json, settings) before deployment.
Minifying JSON payloads to reduce bandwidth and storage size.
Frequently Asked Questions
Does my JSON payload get sent to an external server?
No. All parsing and formatting occurs locally inside your web browser.
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