{ }

JSON Formatter

Format, validate and beautify JSON data online. Minify or pretty-print JSON with syntax highlighting. Free JSON formatter and validator.

Live·100% in your browser — no upload

      

    

  


  

  



What is JSON Formatter
The JSON Formatter takes raw, minified or malformed JSON and reformats it with clean, consistent indentation so it becomes easy to read and debug. When there is a syntax error it tells you the exact line and column, so you can spot a stray comma or an unclosed bracket instantly.
It uses the browser's native parser and runs locally: your JSON is never sent to a server, so you can format sensitive payloads safely.
How it works
  1. Paste your JSON into the box.
  2. Press Format / Beautify to indent it, or Minify to compact it to a single line.
  3. If the JSON is invalid, read the line and column shown and fix it.
  4. Copy the formatted result.
Frequently Asked Questions
What is the difference between Format and Minify?
Format adds indentation and line breaks to make JSON readable while you develop. Minify does the opposite, removing whitespace to shrink the file before sending it over the network.
Is my JSON sent to a server?
No. Formatting and validation happen entirely in your browser with the native parser: no data leaves your device.
Why do I get an 'Unexpected token' error?
Usually a trailing comma before } or ], unclosed quotes, or keys not wrapped in double quotes. The tool points to the exact position so you can find it fast.


Related tools
CSV
CSV to JSON Converter
Live
Convert CSV data to JSON format and JSON to CSV. Parse spreadsheet data for APIs and databases. Free CSV/JSON converter.
data
🔍
JSON Diff Viewer
Live
Compare two JSON objects and see the differences highlighted. Find added, removed and changed values.
data
esc
JSON Escape / Unescape
Live
Escape a string to place it in JSON, or unescape a JSON string. In the browser.
data
{.}
JSON Path Finder
Live
Explore JSON structure as an interactive tree. Click any value to get its JSONPath. Find and copy paths for API data extraction.
data