JSONPath Tester
Run JSONPath expressions against sample JSON and inspect matches in a structured result panel.
What is JSONPath Tester?
Evaluate a JSONPath expression against a sample payload and inspect the selected values. This tool uses JSONPath Plus semantics; verify compatibility with the engine used in your application.
How to use JSONPath Tester?
Step 1
Paste sample JSON into the input panel.
Step 2
Enter the JSONPath expression and run the test.
Step 3
Review the matched values in the result panel.
Example input / output
For {"items":[{"id":1},{"id":2}]}, $.items[*].id selects the two IDs. An empty result can mean a missing path rather than invalid JSON.
Example input
{"services":[{"name":"auth","latency":42},{"name":"billing","latency":58}]}Check the result
- Invalid JSON source documents must be fixed before matching can run.
- Different JSONPath dialects may support slightly different syntax features.
Practical developer examples
Separate single values from lists
A wildcard may select several values even when your fixture has one item. Confirm the consuming code expects a result collection.
Test absent fields
Compare empty arrays, missing properties, null values and different nesting before using the expression in an assertion or extraction pipeline.
Common developer use cases
JSONPath dialects differ. The selected values are not schema validation, and expression evaluation should only be applied to inputs you intend to inspect.
Common issues
FAQ
Is an empty match an error?
Not necessarily. A valid path can match no nodes in the supplied document.
Will the same expression work everywhere?
Check the target library's dialect, especially filters and expression extensions.