JSON Formatter
Paste raw or minified JSON and instantly format it.
JSON formatting tool
Format, validate, and copy JSON
Paste JSON on the left, choose beautify or minify, then copy clean validated output.
Paste minified, messy, or copied JSON here.
Valid JSON. Formatted output is ready to copy.
JSON output
JSON is parsed as data only and is never executed.
Validation status
Valid
Valid JSON. Formatted output is ready to copy.
Status
Valid
Valid JSON. Formatted output is ready to copy.
Input size
132
Characters in the original JSON.
Output size
188
Characters in the generated output.
Line count
14
Lines in the output.
Object count
2
Approximate JSON objects detected.
Array count
1
Approximate JSON arrays detected.
Mode
Beautify
Current output mode.
Copy formatted JSON
Copy readable JSON for debugging, documentation, API review, or sharing with teammates.
Copy minified JSON
Generate and copy compact JSON for transport, embedding, or storage.
Privacy note
Formatting is designed to run locally in your browser without storing user input.
Accuracy note
The formatter validates standard JSON but does not repair every malformed file.
Security note
JSON is parsed as data only and is never executed with eval or Function.
Reset example
Load a practical JSON example with objects, arrays, strings, numbers, booleans, and null-style data.
Formatting options
Keep options compact and focused on readable or compact JSON output.
Long string note
Long URLs, tokens, and encoded values remain valid JSON but may wrap visually in the editor.
Practical JSON examples
Click an example to load it into the formatter.
JSON formatting quick reference
Objects
{ "key": "value" }
Arrays
[1, 2, 3]
Strings
Must use double quotes.
Numbers
No quotes needed.
Booleans
Use true or false.
Null
Use null.
No trailing commas
Standard JSON does not allow trailing commas.
Data only
JSON is data, not executable code.
Developer guide
Format JSON for faster API debugging
JSON formatting helps developers inspect API responses, webhook payloads, logs, configuration files, and copied data without executing it as JavaScript.
What is a JSON Formatter?
A JSON Formatter turns compact, minified, or messy JSON into readable structured data with indentation and line breaks.
When should developers use one?
Use it for debugging API responses, reviewing webhook payloads, formatting configuration files, inspecting logs, cleaning snippets, and preparing documentation examples.
JSON formatting vs JSON validation
Formatting improves readability. Validation checks whether the input is valid standard JSON. JavaScript object literals are not always valid JSON.
JSON beautify vs JSON minify
Beautify makes JSON easier to read. Minify removes whitespace for compact transport or storage. Both preserve the same data when input is valid.
Privacy and security
BlinkCalc is designed to process JSON locally in the browser. Avoid pasting private tokens, credentials, customer data, or sensitive payloads unless you trust the environment.
Common JSON mistakes
How to use this JSON Formatter
- 1Paste your JSON into the input box.
- 2Choose Beautify or Minify.
- 3Review the validation status and any parse errors.
- 4Copy the formatted or minified JSON output.
- 5Use the example or clear button to start again.
Why developers use a JSON Formatter
JSON Formatter FAQs
It converts compact or messy JSON into a readable format with indentation and line breaks.
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