JSON Formatter
Secure• Free• Browser Based
Private Free 100% Browser-side
JSON input
Formatted JSON
Runs locally — nothing is uploaded.
How to JSON Formatter Online — Free, No Upload
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Paste minified or messy JSON, or upload a .json file, into the input panel.
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The formatted JSON appears on the right as you type.
- 3
Copy it, or download it as a .json file.
Why Use Drop's JSON Formatter?
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Turns single-line or messy JSON into clean, indented output.
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Invalid JSON is flagged with the exact error, so it doubles as a validator.
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Runs in your browser — nothing is uploaded.
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No account, no limits.
Frequently Asked Questions
How do I format JSON?
Paste your JSON into the input box. A clean, two-space-indented version appears on the right, ready to copy or download.
Does it validate JSON too?
Yes. If the JSON is invalid, the tool shows the parse error instead of output, so you can spot the problem.
Can it minify JSON?
This tool beautifies with indentation. To minify, use the JSON to CSV/YAML tools or paste the formatted output where you need it.
Is my JSON uploaded?
No. Formatting happens in your browser and the data stays on your device.