JSON Formatter
Free online JSON formatter, validator and beautifier for formatting, pretty printing and checking JSON data.
JSON Formatter
Format, validate and minify JSON directly in your browser.
Your formatted JSON will appear here
Paste JSON on the left and choose Format JSON or Minify JSON to process it.
How JSON Formatter works
Paste or enter JSON data into the formatter to automatically format it with indentation, make nested structures easier to read, and check whether the JSON syntax is valid.
Examples and use cases
Format JSON Online
Turn compact or minified JSON into a clean, readable and properly indented structure.
Beautify JSON
Pretty print JSON by adding indentation and line breaks to make objects, arrays and nested values easier to inspect.
Validate JSON
Check whether your JSON is valid and identify parsing errors caused by incorrect JSON syntax.
Format API Responses
Paste JSON returned by an API and format it into a readable structure for easier inspection and debugging.
Debug JSON Data
Make complex and deeply nested JSON easier to understand while troubleshooting applications and APIs.
About JSON Formatter
JSON stands for JavaScript Object Notation and is a lightweight text format commonly used to store and exchange structured data between applications, websites and APIs.
A free online JSON formatter makes compact or minified JSON easier to read by adding indentation, line breaks and a clear structure. This is especially helpful when working with nested objects and arrays.
Calvyn's JSON Formatter works as a JSON beautifier and validator, helping developers format, pretty print and inspect JSON data directly in the browser.
You can use the JSON formatter to inspect API responses, review configuration files, debug application data, and understand complex JSON structures without manually adding indentation.
The formatter also checks whether the provided JSON is valid. If the JSON cannot be parsed, an error can help identify syntax problems such as missing quotes, commas, brackets or braces.
Frequently asked questions
What is a JSON formatter?+
A JSON formatter converts compact or poorly formatted JSON into a readable structure by adding indentation and line breaks. It makes objects, arrays and nested values easier to inspect.
Is this a free online JSON formatter?+
Yes. Calvyn's JSON Formatter is a free online tool that lets you format, beautify and validate JSON directly in your browser.
What is a JSON beautifier?+
A JSON beautifier, also called a JSON formatter, converts compact or minified JSON into a structured format with indentation and line breaks for easier reading.
Can I validate JSON with this tool?+
Yes. The formatter parses the provided JSON and can identify whether the content follows valid JSON syntax. Invalid JSON produces a parsing error.
Can I pretty print JSON?+
Yes. Pretty printing JSON adds indentation and line breaks to make the structure easier to read and understand.
Why is my JSON invalid?+
JSON can become invalid because of syntax errors such as missing quotation marks, incorrect commas, unmatched brackets or braces, invalid values, or other formatting mistakes.
Can I format JSON from an API response?+
Yes. You can paste a JSON API response into the formatter to make its objects, arrays and values easier to read, inspect and debug.
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