json formatter
JSON Formatter & Validator
Paste JSON to format, validate and beautify it instantly.
How to Use the JSON Formatter
- Paste your raw or minified JSON into the input box.
- Click Format JSON to beautify it with proper indentation, or Minify to compress it into a single line.
- Click Copy Output to copy the result to your clipboard.
How It Works
The tool uses your browser's built-in JSON parser to validate and reformat the data you enter. If the JSON is invalid, an error message explains what's wrong so you can fix it quickly. Nothing you paste is sent to a server.
Frequently Asked Questions
Why does it say "Invalid JSON"? Common causes include trailing commas, missing quotes around keys, or unclosed brackets — the error message usually points to the exact location.
Is there a size limit? No fixed limit is imposed by the tool, though extremely large JSON files may take a moment to process depending on your device.
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