DEVELOPER TOOLS / DEVTOOLS
JSON Formatter
Format and validate JSON with readable indentation.
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Processing happens locally in this browser.
ABOUT THIS TOOL
What JSON Formatter does
Turn compact or hard-to-scan JSON into consistently indented text, and check that its syntax is valid before using it in an application or API request.
Useful when reviewing API responses, editing configuration, or debugging malformed JSON.
How to use JSON Formatter
- Paste or type a JSON object or array.
- Choose two spaces, four spaces, or tabs for indentation.
- Select Format JSON, or select Validate to check syntax only.
ANSWERS AND DETAILS
Frequently asked questions
What does this tool do?
Turn compact or hard-to-scan JSON into consistently indented text, and check that its syntax is valid before using it in an application or API request.
When is this tool useful?
Useful when reviewing API responses, editing configuration, or debugging malformed JSON.
Is my input uploaded?
No. This tool runs in your browser and does not send the value you enter to a processing server.