How do I validate JSON syntax?

Simply paste your raw JSON string. DevAtlas instantly validates syntax and highlights structural errors with line indications.

JSON Developer Tool

JSON Formatter, Validator & Minifier

Format, validate, repair, and minify JSON data instantly in your browser with zero server latency.

Indent Spaces:

Valid JSON Syntax | 7 Keys Detected | 156 Bytes

Input Raw JSON

6 lines | 142 bytes

Formatted / Validated JSON OutputClient Formatted

10 lines | 156 bytes

{
  "appName": "DevAtlas",
  "version": 1,
  "features": [
    "JSON Formatter",
    "JWT Decoder",
    "Cron Parser"
  ],
  "privacy": "100% Client-Side"
}

Frequently Asked Questions

No. JSON parsing and formatting occur 100% in your local browser JavaScript memory. No data is transmitted.