JSON Path Tester
Evaluate JSONPath expressions against JSON data — 100% local processing
JSON Input
0 bytes
About JSONPath Tester
JSONPath is a query language for selecting values inside a JSON document, similar to how XPath works for XML. An expression such as $.store.book[*].author picks out every author in a nested structure without writing loops.
Paste your JSON, enter an expression, and the tester evaluates it live in your browser and shows the matching values. It is a fast way to build and debug expressions before using them in code, an API gateway, or a test tool. Different libraries implement slightly different JSONPath features, so confirm behavior with the one you use.
Common use cases
- Extracting nested fields from a large API response.
- Building an expression for a test assertion or data pipeline.
- Checking whether a filter expression matches the items you expect.
- Exploring an unfamiliar JSON document.
Frequently asked questions
- What does the $ symbol mean?
- It refers to the root of the document. Expressions start there and navigate down.
- Why does my expression return nothing?
- Check key names and casing, and remember that array indexes start at zero.
- Is JSONPath standardized?
- It has a standard specification now, but many libraries predate it and differ in details, particularly for filters.