API response
Format compact API output so nested objects and arrays are easier to inspect.
{"status":"ok","data":{"project":"BuildOnLabs","tools":["json-formatter","uuid-generator"],"active":true}}Developer Utilities
JSON Formatter
Format, validate, and inspect JSON in the browser without sending data to a server.
json formatterjson validatorjson beautifierdeveloper tool
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This tool runs locally in your browser. Your input is not sent to a backend or paid API.
JSON Formatter
Format, validate, and minify JSON locally.
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How to use
How to use JSON Formatter
Follow this workflow to complete the task locally without leaving the page.
- 1
Paste raw JSON into the input editor.
- 2
Select two-space, four-space, tab, or minified output.
- 3
Use Format JSON to validate and generate clean output.
- 4
Copy the formatted result or reset the editor when you are done.
Examples
Example inputs
Use these examples to understand common workflows and expected input formats.
Configuration object
Validate config snippets before adding them to docs, scripts, or app settings.
{"name":"buildonlabs","seo":{"index":true,"canonical":"/tools/json-formatter"},"tags":["json","tools"]}FAQ
JSON Formatter FAQ
Answers to common questions about behavior, privacy, and practical usage.
Does this JSON Formatter upload my JSON?
No. Formatting and validation run in your browser with JavaScript. The tool does not send your JSON to a backend or paid API.
Can I use this tool to validate invalid JSON?
Yes. Paste your JSON and run the formatter. If the input is invalid, the tool shows a parse error so you can fix the syntax.
What is the difference between formatted and minified JSON?
Formatted JSON adds whitespace and line breaks for readability. Minified JSON removes extra whitespace for compact storage or transport.
Does the formatter support arrays and nested objects?
Yes. It uses the browser JSON parser, so valid JSON arrays, nested objects, strings, numbers, booleans, and null values are supported.