JSONPath Tester

A fast, private JSONPath tester

When working with large or deeply nested JSON data, extracting the exact information you need can be tedious. This JSONPath tester provides a live environment to write, test, and debug your queries. As you type your expression, the tool instantly evaluates it against your JSON payload, showing you both the extracted values and the exact paths where those values were found.

Because this is a fully client-side JSON path evaluator, all processing happens locally on your device. Your JSON data is never sent to a server. This means you can safely paste production API payloads, database exports, or sensitive configuration files without worrying about data leaks or privacy violations.

Core features for developers

• Live evaluation: The results update immediately as you modify your JSON data or your query. There is no need to click a submit button or wait for a server response.
• Safe parsing: The tool uses a secure evaluation engine (eval: 'safe') to process your queries, preventing malicious code execution while maintaining full support for complex filter expressions.
• Path extraction: In addition to showing the matched values, the tool generates the absolute paths for every match. This is highly useful if you need to programmatically update those specific nodes later.
• Built-in examples: If you are new to the syntax, you can load a sample bookstore dataset and click through several pre-written expressions to see how different operators function.

How to write a JSONPath query

JSONPath uses a specific syntax to navigate through JSON objects and arrays. If you want to test JSONPath expression logic, it helps to understand the fundamental operators:

• $ represents the root object or array. Every absolute JSONPath expression begins with this symbol.
• @ represents the current node being processed. It is primarily used inside filter expressions.
• . or [] are child operators used to select properties. For example, $.store.book and $['store']['book'] do the same thing.
• .. is the recursive descent operator. It searches for a specific key anywhere in the JSON tree, regardless of how deeply nested it is (e.g., $..price finds all prices).
• * is a wildcard that matches all elements in an object or array. For instance, $.store.* selects everything directly inside the store object.
• [?()] applies a filter expression. You can use standard logical operators inside it. For example, $..book[?(@.author == 'Nigel Rees')] will find all books written by that specific author.
• [start:end:step] allows you to slice arrays, similar to Python. $.store.book[-1:] selects the last book in the array.

Common use cases

API development and debugging. Modern REST and GraphQL APIs often return massive JSON payloads. Instead of writing temporary code to parse and inspect the response, you can paste the payload into this JSONPath online tool to quickly verify that the data structure is correct and that your queries extract the right fields.

Automated testing. When writing integration tests or end-to-end tests (using tools like Postman, RestAssured, or Playwright), you frequently need to assert that specific values exist in a JSON response. Using a jsonpath tester helps you perfect the query string before hardcoding it into your test suite.

Data extraction and transformation. If you are migrating data or building ETL (Extract, Transform, Load) pipelines, you often need to isolate specific arrays or objects. You can use this tool to figure out the exact paths needed to extract your target data. If your source data is in XML, you can first use the XML to JSON converter, and if you need to format minified data before inspecting it, the JSON Formatter can help. You can also use the JSON Compare tool to see how your data changes before and after transformations.