XPath Tester

A focused XPath testing tool for XML data, helping developers and QA validate expressions, inspect results, and debug data extraction workflows quickly.

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Request Feature / Support

984+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how XPath Tester processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

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About This Tool

The XPath tester is a focused tool for testing XPath expressions against XML data. It helps developers, QA engineers, and data engineers verify that their queries select the intended nodes, extract text, and handle attributes. The tool enables rapid iteration during development and troubleshooting in data integration pipelines.
Conceptually, the tool accepts XML input, an XPath expression, and optional namespace mappings, then parses the XML, resolves prefixes, evaluates the expression, and returns a structured result for review.
Key differentiators include immediate feedback, explicit error diagnostics, and built-in namespace support that reduces false negatives caused by missing prefixes. Use cases span validating data extraction in ETL, debugging automation scripts, and prototyping queries for integration tasks.
Core features include input validation, result serialization, and export options for downstream tooling. The tool is designed for automated use or manual testing by developers and QA professionals who rely on precise data selection and fast feedback loops.

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How to Use

Provide inputs: Paste XML content into the XML input field.
Enter XPath expression to select nodes or values.
(Optional) Add namespace mappings to resolve prefixes.
Run evaluation to compute results.
Review results, including node values or serialized fragments, and export if needed.

Frequently Asked Questions

Find Quick Answers

What formats are supported for inputs and outputs?

Inputs support raw XML strings; outputs are serialized as arrays of nodes or primitive values (string/number/boolean). If multiple nodes match, the tool returns a list with their serialized representations.

How are namespaces handled?

Provide prefix-to-URI mappings and use prefixes in your XPath expressions. If a prefix is not defined, evaluation fails with a namespace error; defining all used prefixes resolves the issue.

What happens with invalid XPath expressions?

Invalid syntax triggers a syntax error from the evaluator, including position hints when available. These errors guide correction without requiring external tooling.

Are XSLT or external entities supported?

No. The tool focuses on XPath evaluation against XML data and does not process XSLT transformations or resolve external entities, ensuring safer, isolated testing.

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