How to use this tool
- Paste JSON, upload a local file, or load a CORS-enabled public URL.
- Run Minify JSON after the source passes strict parsing.
- Review the result, then copy it or download it with the correct file type.
Private by default
JSON Minifier
Create compact JSON for fixtures, payloads, logs, and transport.
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AuditableDocumented semantics
PortableCorrectly typed downloads
Category
JSON Minifier: How to use this tool
Remove insignificant JSON whitespace without changing keys, values, or array order.
Create compact JSON for fixtures, payloads, logs, and transport.
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 Minifier produce?
It emits one compact JSON line with identical parsed values.
What limitation applies to JSON Minifier?
Minification reduces whitespace, not the size of strings or encoded data.