What JSON Shape Analyzer does
Profile shapes, paths, key coverage, mixed types, nulls, cardinality, numeric ranges, size, and naming consistency.
Also searched as analyze, analysis, profile, stats, statistics, shape, quality, coverage.
Traverse once in the worker
Aggregate path and field statistics
Surface rare shapes and inconsistencies
Beyond syntax
Valid JSON can still contain mixed types, surprising null rates, naming drift, or unusually large subtrees. Analysis makes those patterns visible.
Dataset-aware
Arrays are profiled as samples, including coverage, cardinality, ranges, and representative values.
JSON Shape Analyzer FAQ
Does jsontools.me upload my JSON?
No. The document is parsed and processed by json-buf inside a dedicated WebAssembly worker on your device.
Does it work offline?
Yes. After the application shell and engine have loaded once, the installable PWA keeps the tools available without a network connection.