How to use this tool
- Paste JSON, upload a local file, or load a CORS-enabled public URL.
- Optionally choose indentation in Advanced, then run Format JSON.
- Review the result, then copy it or download it with the correct file type.
Private by default
JSON Formatter and Beautifier
Turn dense payloads into readable JSON while preserving every value and array position.
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AuditableDocumented semantics
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Category
JSON Formatter: How to use this tool
Format JSON with consistent two, three, or four-space indentation in a private browser workspace.
Turn dense payloads into readable JSON while preserving every value and array position.
Open guide and examples
Example to try
Input JSON
{
"project": "jsonformatters.org",
"status": "ready",
"features": [
"format",
"validate",
"convert"
],
"settings": {
"indent": 2,
"sortKeys": false,
"localOnly": true
},
"documents": [
{
"id": 101,
"name": "launch-config.json",
"valid": true
},
{
"id": 102,
"name": "sample-data.json",
"valid": true
}
],
"lastError": null
}Result
{
"project": "jsonformatters.org",
"status": "ready",
"features": [
"format",
"validate",
"convert"
],
"settings": {
"indent": 2,
"sortKeys": false,
"localOnly": true
},
"documents": [
{
"id": 101,
"name": "launch-config.json",
"valid": true
},
{
"id": 102,
"name": "sample-data.json",
"valid": true
}
],
"lastError": null
}Learn
Frequently asked questions
Does this tool upload my JSON?
No. The transformation runs in your browser. URL import contacts only the address you explicitly enter.
What happens when the JSON is invalid?
The editor marks the likely location and keeps stale output out of the result pane.
What does JSON Formatter produce?
It produces strict, readable JSON with the selected indentation and unchanged data.
What limitation applies to JSON Formatter?
Formatting requires valid JSON; open the dedicated JSON Repair tool for documented common syntax slips.