JSON Formatter
Pretty-print and beautify JSON with custom indentation.
Input
Formatted output
About the JSON Formatter
Format messy or minified JSON into a clean, readable structure with configurable indentation and optional key sorting. Errors are reported with the exact line and column so you can fix them quickly.
Examples
Minified to pretty
{"name":"Ada","skills":["logic","math"]}Output
{
"name": "Ada",
"skills": [
"logic",
"math"
]
}Keyboard shortcuts
- Copy the main outputCtrl / ⌘ + Shift + C
- Download the resultCtrl / ⌘ + S
- Share this toolCtrl / ⌘ + Shift + S
- Reset the inputsAlt + R
- Open the tool search paletteCtrl / ⌘ + K
Related tools
JSON Key Sorter
JSON
Sort JSON object keys alphabetically, naturally, or by array field.
JSON Minifier
JSON
Compress JSON by removing whitespace and show bytes saved.
JSON Repair / Auto-fixer
JSON
Auto-fix broken JSON: quotes, trailing commas, comments, and more.
JSON String Escape
JSON
Escape special characters for use inside a JSON string.
JSON String Unescape
JSON
Reverse JSON string escaping back to readable text.
JSON Validator
JSON
Validate JSON syntax and see detailed error diagnostics.
Frequently asked questions
Read more
- Why browser-based developer tools are safer than online converters
Most 'online' formatters upload your data to a server. Here's why client-side processing matters, and how to tell the difference.
- A practical guide to formatting, validating and converting JSON
Indentation, key sorting, common parse errors, and when to convert JSON to YAML, XML or CSV instead.
- JSON Schema validation in real projects
Beyond 'required fields' — writing JSON Schemas that catch real bugs, choosing a validator, and using schemas as living documentation.
Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser