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Create, edit or time your work entirely in this browser tab.
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Enter valid JSON to format it locally.
Features and quick guide
JSON Formatter & Minifier features
Choose 2- or 4-space indentation; syntax errors preserve the source and show the browser parser message for quick inspection.
3-step quick guide
- 1Paste or type a JSON document.
- 2Choose indentation and format it, or minify it to remove whitespace.
- 3Copy the result or download a JSON file.
Local privacy statement
JSON is parsed and exported locally without an API, file upload or remote storage workflow.
No login, membership or server-side processing is required.
Frequently asked questions
Is data sent to an API?
No. JSON.parse and JSON.stringify run in the current browser.
Are errors repaired automatically?
No. The parser error is shown so your data is not silently changed.
Does formatting change values?
Valid JSON is reserialized; indentation and whitespace follow your selected option.