JSON Formatter
Format, validate, and minify JSON in your browser. Pretty-print with 2 or 4-space indent, or strip whitespace for compact output. No signup, no upload.
Formatted JSON will appear here...What is the JSON Formatter?
A JSON formatter parses raw JSON and either pretty-prints it for readability or strips it down to a single line for transport. Developers reach for one when an API returns a wall of unindented text, or when they want to validate that an object is syntactically correct before pasting it into a config file.
How to use the JSON Formatter
- 1
Paste your raw JSON
Drop the response body, config snippet, or schema into the input pane on the left.
- 2
Format or minify
Click Format to indent for reading, or Minify to collapse it to one line for storage and transmission.
- 3
Fix any errors flagged
If the parser finds a missing comma, unquoted key, or trailing comma, the error pane shows what went wrong and where to look.
- 4
Copy the result
Hit Copy to send the formatted output to your clipboard, ready to paste into your editor or curl command.
Frequently Asked Questions
Does this tool validate JSON?
The Format button parses your input with the browser's native JSON.parse(), the same engine that runs in production JavaScript. If anything's malformed (missing commas, unquoted keys, trailing commas), you get the line and column number of the first failure.
What's the difference between Format and Minify?
Format adds line breaks and either 2 or 4 spaces of indentation so a human can read it. Minify strips every space and newline to produce the smallest valid JSON, which is what you want for storage, transmission, or comparing two payloads byte-for-byte.
Is my JSON data safe?
Nothing leaves your browser. The parsing and formatting happen via in-page JavaScript. Open DevTools, switch to the Network tab, and you'll see no outbound request when you click Format. Use it freely with API responses that contain secrets or PII.