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JSON Path Tester

Test JSONPath expressions against JSON data. See matched results in real-time. Supports dot notation, recursive descent, wildcards, and filters.

Enter JSON and a JSONPath expression, then click Run

What is JSON Path Tester?

JSONPath is a query language for JSON, similar to XPath for XML. It lets you navigate and extract specific values from complex JSON structures using expressions like $.store.book[0].title (first book title) or $..author (all authors at any depth). This tool evaluates JSONPath expressions against your JSON data entirely in the browser, showing matched results instantly.

How to Use JSON Path Tester

  1. 1

    Enter your JSON

    Paste or type your JSON data in the left panel. The tool validates JSON syntax in real-time and highlights errors. Click "Try Example" to load sample data.

  2. 2

    Write a JSONPath expression

    Enter a JSONPath expression in the top input field. All expressions start with $ (the root). Use dot notation for properties ($.store), brackets for arrays ($.book[0]), and two dots for recursive descent ($..price).

  3. 3

    Click Run

    Press the Run button or hit Enter. The tool evaluates the expression against your JSON and shows all matching values in the right panel.

  4. 4

    Review matches

    Each match is displayed with its index, type, and value. Objects and arrays are formatted as pretty-printed JSON. Click Copy to get all results as a JSON array.

  5. 5

    Try example paths

    Click the example path buttons below the input to quickly test common patterns. Each button fills in a different JSONPath expression.

Features

  • Dot notation: $.store.book.title for nested property access
  • Recursive descent: $..author finds "author" at any depth
  • Wildcards: $.store.book[*].title matches all array items
  • Array indexing: $.store.book[0] accesses specific elements
  • Filter expressions: $[?(@.price<10)] for conditional matching
  • Real-time JSON validation with error highlighting
  • One-click example paths for quick testing
  • 100% client-side -- your JSON data stays in your browser

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Frequently Asked Questions

What is JSONPath?+
JSONPath is a query language for extracting data from JSON documents, similar to XPath for XML. It was proposed by Stefan Goessner in 2007 and is widely used in API testing tools (Postman, Rest Assured), configuration systems, and data processing pipelines.
What JSONPath features are supported?+
This tool supports: root ($), dot notation (.key), bracket notation ([key]), array index ([0]), wildcard ([*]), recursive descent (..), and filter expressions ([?(@.key<value)]). Comparison operators in filters include ==, !=, <, >, <=, >=.
What does $.. (recursive descent) do?+
The double-dot (..) operator searches the entire JSON tree at all levels. For example, $..price finds every "price" property anywhere in the document, regardless of nesting depth. This is useful when you do not know the exact path to a value.
How do filter expressions work?+
Filters match array elements conditionally. The syntax is [?(@.property operator value)]. @ refers to the current element. For example, $.books[?(@.price<20)] returns all books with price less than 20. String values should be quoted.
Is my JSON data sent to a server?+
No. All JSONPath evaluation runs entirely in your browser using JavaScript. Your JSON data never leaves your device.
What is the maximum JSON size?+
There is no hard limit, but very large JSON documents (10MB+) may cause the browser to slow down. For best performance, keep JSON under 1MB. The tool handles typical API responses and configuration files without issue.
Why are there no matches?+
Common reasons: (1) The path does not exist in your JSON. (2) Property names are case-sensitive. (3) You forgot the $ prefix. (4) Array indices are zero-based (first item is [0], not [1]). Check the example paths to verify syntax.
Can I use this for API testing?+
Yes. Paste an API response into the JSON panel and test your JSONPath expressions to verify data extraction logic before coding it. This is commonly done alongside tools like Postman or curl.