JSON Formatter
Turn messy JSON into readable, structured data. Format, minify, and find syntax errors in seconds.
What does this tool do?
A JSON formatter makes compact JSON readable with indentation. This tool also checks whether input is valid JSON and can remove optional whitespace; it does not validate an API schema.
When to use this tool
Use the JSON formatter to inspect API responses, review configuration files, or pretty-print a compact payload. Validation checks JSON syntax; it does not check an API schema. Minifying removes optional whitespace when you need a compact result.
How to use JSON Formatter
- Paste your JSON or load the sample.
- Choose an indentation level, then format, minify, or validate.
- Copy your result or download it as a JSON file.
A quick example
Input: {"hello":"world"}
Output:
{
"hello": "world"
}Common questions
Does formatting change my data?
Whitespace changes, but the parsed values stay the same. JavaScript numbers may lose precision for integers beyond Number.MAX_SAFE_INTEGER. Duplicate keys keep only their final value.
Is my JSON uploaded?
No. Parsing and formatting happen in your browser. Input is never saved by this application.
Working with a large input? Text converters accept up to 1,000,000 characters. Regex test text is limited to 50,000 characters and JWTs to 100,000.