Free JSONPath Tester & Evaluator | Local Real-Time Queries

Free JSONPath tester and evaluator for API JSON. Extract matching nodes in real time, inspect paths, and copy JSON results while parsing stays local in your browser.

Click for theater mode
JSON parsing, path matching, and result copying run locally in this browser. Source data is not uploaded.
Bookstore order payload

Source Preview

Formatted preview appears after you enter valid JSON.

Matched Results

Enter JSON and a JSONPath expression to evaluate automatically

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Matches
0
Time

JSON syntax error: Expected double-quoted property name in JSON at position 563 (line 28 column 5)

No matches yet. Adjust the expression or load the sample to start testing.

JSONPath Cheat Sheet

Click any expression to apply it to the input.

How to Use

  1. Click Load sample, or paste an API response or config snippet into JSON Source.
  2. Type a JSONPath query in JSONPath Expression, such as $.store.book[*].author or $..author.
  3. Review match count, paths, and values in Matched Results; click Copy result JSON to copy the matches as an array.
  4. Use the in-tool cheat sheet when you need a syntax reminder. This evaluator covers common JSONPath patterns; check highly specific dialect features against your target runtime.

Core Features

  • Real-time JSONPath evaluation: Re-run queries as you type, ideal for API responses, config files, and test payloads.
  • Local processing by design: JSON parsing, path matching, and result copying happen in the current browser session without sending payloads to a server.
  • Path-aware results: Every match shows its JSONPath location plus a formatted value, making nested data easier to inspect.
  • Highlighted source preview: Valid JSON is formatted with lightweight highlighting for strings, numbers, booleans, and null values.
  • Built-in syntax cheat sheet: Use root selectors, dot notation, array wildcards, recursive descent, slices, and common filter expressions without leaving the tool.

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Calculation Logic

This tool uses local JavaScript JSONPath evaluation in the browser: it parses text with JSON.parse, then walks object and array tokens for properties, indexes, wildcards, recursive descent, slices, and common filter comparisons. The whole process stays in the current page memory and does not require a server, which makes it suitable for API payloads containing keys, user records, or internal configuration.

To avoid overstating compatibility, the implementation focuses on common JSONPath patterns such as &#36;.store.book[0].title, &#36;..author, &#36;.store.book[*], and &#36;.store.book[?(@.price < 10)]. JSONPath dialects vary across ecosystems, so highly custom script expressions should still be checked against your target runtime.

FAQ

  • Is it safe to paste API responses with user data here?
    • Yes. The tool runs client-side only, so your JSON is not transmitted to a server.
  • Does it support filter expressions?
    • It supports common comparison filters such as [?(@.price < 10)] and [?(@.category == "fiction")].
  • Why can the same JSONPath return different results in another tool?
    • JSONPath has multiple historical dialects. JS, Java, and Python evaluators may differ on edge cases, while this tool focuses on common modern query syntax.
  • Why is the output always an array?
    • A JSONPath query can match zero, one, or many nodes. Results are normalized to a JSON array for copying and downstream use.
  • Can I use it offline?
    • After the page loads, JSON parsing and querying do not depend on backend services; current-page inputs keep working without a network connection.