JSON Statistics Analyzer
Analyze JSON structure — get key counts, nesting depth, value types, array sizes, and more.
Paste JSON and click Analyze to see statistics
About JSON Statistics Analyzer
The JSON Statistics Analyzer gives you a complete structural breakdown of any JSON document. Instantly see file size, total keys, nesting depth, value type distribution, largest arrays, and most frequent keys — all in your browser with zero data upload.
Common Use Cases
API Response Inspection
Understand the structure and size of API responses before integrating them into your application.
Data Quality Checks
Detect null-heavy fields, unexpected nesting depths, or oversized arrays in your JSON datasets.
Performance Optimization
Identify deeply nested structures or large arrays that may cause parsing performance issues.
Schema Understanding
Explore unfamiliar JSON structures from third-party APIs quickly without writing code.
100% Client-Side Processing
Your data never leaves your browser
All processing happens in your browser using JavaScript. Your data is never sent to our servers or any third party. Safe for sensitive data, API keys, and production configs.
Frequently Asked Questions
Quick answers to common questions about json statistics analyzer
Max Depth is the deepest level of nesting in your JSON. A depth of 1 means all values are at the root level. Deeply nested JSON (depth > 10) can sometimes cause performance issues in some parsers.
No. All analysis happens entirely in your browser using JavaScript. Your data never leaves your device.
Total Keys counts every key across all objects in the document (including duplicates in arrays of objects). Unique Keys counts each distinct key name only once.