JSON Formatter
Format, validate, and beautify your JSON data with syntax highlighting. Fix invalid JSON, adjust indentation, and make your JSON data more readable.
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How to Use the JSON Formatter
- Paste your JSON data into the input field or click "Upload" to load a JSON file.
- Click "Format JSON" to beautify and validate your JSON.
- Adjust the indentation size using the dropdown menu if needed.
- Use "Minify" to compress the JSON by removing all whitespace.
- Click "Copy" to copy the formatted JSON to your clipboard.
- Click "Download" to save the formatted JSON as a file.
About JSON
JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language.
JSON Syntax Rules
- Data is represented in name/value pairs
- Curly braces
{}hold objects - Square brackets
[]hold arrays - Names must be strings, written with double quotes
- Values can be strings, numbers, objects, arrays, booleans (
trueorfalse), ornull - Multiple name/value pairs are separated by commas
Common JSON Errors
- Missing or extra commas
- Missing quotes around property names
- Using single quotes instead of double quotes
- Trailing commas in arrays or objects
- Comments (JSON does not support comments)
- Unescaped special characters in strings
This tool processes all JSON locally in your browser. Your data is never sent to any server, ensuring your privacy and security.