Workflow
Profile an unfamiliar payload
Measure structure, types, completeness, and value distribution.
Data Toolkit capability
JSON Inspection Tools
Understand structure, types, completeness, frequency, size, paths, and differences without changing data.
Your files never leave your computer.All processing happens locally inside your browser.
- 7 focused production utilities
- No signup and no server-side file processing
- Use one tool or follow a complete workflow
Choose the right workflow
Inspection tools explain what is inside a document before you validate, transform, or modify it. Reports are deterministic and leave the source untouched.
- Use Type Profiler or Structure Analyzer to understand an unfamiliar document.
- Use Null & Missing Inspector or Frequency Analyzer for record quality.
- Use Size Analyzer for payload cost, Pointer Explorer for exact paths, and Diff for changes between versions.
Workflow
Review an API change
Compare versions and inspect exact JSON Pointer locations.
Workflow
Measure transport cost
Find the largest parts of a payload and estimate minification savings.
All available tools
Explore json inspection tools
JSON Size AnalyzerMeasure JSON bytes, containers, properties, strings, and estimated savings.JSON Structure AnalyzerMeasure JSON depth, containers, leaves, paths, and repeated structures.JSON Array Frequency AnalyzerCount field values and inspect top, least-common, and percentage distributions.JSON Null & Missing Value InspectorFind nulls, missing properties, empty strings, and field completeness.JSON Type ProfilerAnalyze JSON value types, percentages, properties, and normalized paths.JSON Pointer ExplorerExplore a JSON tree and copy RFC 6901 pointers to any node.JSON Diff & CompareCompare two JSON documents and report every structural change.