JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting.
How to Use JSON Formatter
The JSON Formatter makes working with JSON data effortless. Paste your JSON into the editor — or load a file using the upload button. The tool automatically detects and highlights any syntax errors with line numbers. Click Format to beautify the JSON with proper indentation, or Minify to compress it. Switch between raw code view and tree view to explore the data structure visually. The tree view lets you collapse and expand nested objects and arrays. Copy the formatted output with one click. Everything processes in your browser, so your data stays private.
Frequently Asked Questions
What does a JSON formatter do?
It takes compressed or messy JSON data and reformats it with proper indentation, line breaks, and syntax highlighting for easy reading and debugging.
Can it validate JSON?
Yes, the tool validates your JSON and highlights syntax errors with line numbers, making it easy to find and fix problems.
What's the maximum JSON size supported?
The tool handles large JSON files — processing happens in your browser, so limits depend on your device's memory.
Can I minify JSON too?
Yes, the tool can both beautify (pretty-print) and minify (compress) JSON data with one click.
Does it support JSON with comments?
The formatter handles standard JSON. JSON5 format with comments may need comments removed before formatting.
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