Skip to main content
Data File Tool

JSON Health Score

JSON Health Score.

Score JSON data quality — depth, types, duplicate keys, empty values.

Your files never leave your device

What it does

Score JSON data quality — depth, types, duplicate keys, empty values.

Why use it

JSON Health Score scores JSON structure quality — depth, types, duplicate keys, and empty values.

Example input

{"users": [{"id": 1, "profile": {"name": "Alice", "prefs": {}}}], "meta": {"version": 1}}

Example output

JSON Health Score: 88/100 (Grade B)
  • Nesting depth: 3 levels
  • 0 duplicate keys
  • 2 empty string values

Health Score sample

Health Score: 82/100 (Grade B)
Issues Found:
 • 14 duplicate rows
 • 3 malformed dates
 • 21 missing emails
 • 2 inconsistent delimiters

Frequently Asked Questions

Is my data uploaded when using JSON Health Score?

No. All processing runs locally in your browser. Your files never leave your device.

Do I need an account?

No account is required. All tools are free and work instantly.