Is my JSON data uploaded anywhere?

No. The expression is evaluated entirely in your browser using the jsonpath-plus library. Your JSON never leaves the page.

Which JSONPath features are supported?

The tool uses jsonpath-plus, which covers the common Goessner syntax: dot and bracket notation, wildcards ($.store.book[*]), recursive descent ($..price), array slices, and filter expressions such as $..book[?(@.price>15)].

Why is the result always an array?

JSONPath queries can match zero, one, or many nodes, so the result is returned as a JSON array of all matched values. An empty array means the path matched nothing.

JSONPath Evaluator

Overview

JSONPath is to JSON what XPath is to XML: a query language for pulling specific values out of nested structures. This evaluator runs your expression against pasted JSON as you type — useful for prototyping jq-style extractions, writing API assertions, or debugging why a path in your code returns nothing.

How to use

Enter an expression in the JSONPath field, e.g. $.store.book[*].title.
Paste your document into the JSON textarea.
Matched values appear in Result as a pretty-printed JSON array. Parse errors in either input are shown inline.

Examples

$.store.book[*].title on the sample data → ["A", "B"]
$..price → [10, 20] (recursive descent over every price key)
$..book[?(@.price>15)] → the book objects whose price exceeds 15

Notes

Evaluation runs on every keystroke, so very large documents may feel sluggish. Filter expressions use JavaScript-like comparison syntax; remember @ refers to the current node being tested.