XPath Tester

By Admin / January 15, 2026

`; } /** * Escapes HTML special characters to display as text. */ function escapeHTML(str) { if (typeof str !== 'string') return str; return str.replace(//g, '>'); } /** * Main function to parse XML and run the XPath query. */ function runXPathTest() { const xmlString = xmlInput.value.trim(); const xpathString = xpathInput.value.trim(); if (!xmlString) { displayError('XML code is empty. Please paste your XML.'); return; } if (!xpathString) { displayError('XPath query is empty. Please enter a query.'); return; } try { // 1. Parse the XML const parser = new DOMParser(); const xmlDoc = parser.parseFromString(xmlString, "application/xml"); // Check for XML parsing errors const errorNode = xmlDoc.querySelector("parsererror"); if (errorNode) { displayError(`Error parsing XML: ${errorNode.innerText || errorNode.textContent}`); return; } // 2. Evaluate the XPath const results = xmlDoc.evaluate(xpathString, xmlDoc, null, XPathResult.ANY_TYPE, null); output.innerHTML = ''; // Clear previous results const resultItems = []; const serializer = new XMLSerializer(); // 3. Process the results based on their type switch (results.resultType) { case XPathResult.STRING_TYPE: resultItems.push(results.stringValue); break; case XPathResult.NUMBER_TYPE: resultItems.push(results.numberValue.toString()); break; case XPathResult.BOOLEAN_TYPE: resultItems.push(results.booleanValue.toString()); break; case XPathResult.UNORDERED_NODE_ITERATOR_TYPE: case XPathResult.ORDERED_NODE_ITERATOR_TYPE: let node; while (node = results.iterateNext()) { if (node.nodeType === 1) { // Element node resultItems.push(serializer.serializeToString(node)); } else if (node.nodeType === 2) { // Attribute node resultItems.push(`${node.name}="${node.value}"`); } else { // Text, Comment, etc. resultItems.push(node.textContent); } } break; default: displayError('XPath returned an unknown result type.'); return; } // 4. Display the results if (resultItems.length === 0) { output.innerHTML = '

No results found for this XPath query.

'; } else { output.innerHTML = resultItems.map(item => { const escapedItem = escapeHTML(item); return `

${escapedItem}

`; }).join(''); } } catch (e) { // This catches invalid XPath syntax displayError(`Invalid XPath query: ${e.message}`); } } // --- Event Listeners --- testBtn.addEventListener('click', runXPathTest); clearBtn.addEventListener('click', clearAll); uploadBtn.addEventListener('click', () => fileUpload.click()); fileUpload.addEventListener('change', handleFileUpload); });

Online XPath Tester & XML Query Debugger

Test, validate, and evaluate XPath queries against XML data instantly. This browser-based XPath Tester allows developers, data analysts, and QA engineers to test expressions and extract node sets in real-time without setup or server latency.

How to Use the XPath Tester

Testing XML nodes and evaluating expressions takes only a few seconds with our simple three-step workflow:

1. Input Your XML Data: Paste your raw XML string directly into the Enter XML Code box, or click Upload XML to select a .xml file from your device.
2. Enter Your XPath Expression: Type your path expression into the Enter XPath Query box (for example, //book/author or //item[@id='1']).
3. Run and View Results: Click the blue Test XPath button. The extracted nodes, element values, or attributes will immediately display in the XPath Results window. Click Clear whenever you want to reset all fields.

Essential XPath Cheat Sheet

XPath (XML Path Language) uses path expressions to navigate through elements and attributes in an XML document. Use this quick reference guide to construct valid expressions:

Expression	Description	Example Query
/	Selects from the root node.	/catalog/book
//	Selects nodes in the document from the current node that match the selection, no matter where they are.	//author
.	Selects the current node.	./title
..	Selects the parent of the current node.	//author/..
@	Selects attributes.	//@category or //book[@id='101']
*	Matches any element node (wildcard).	//book/*
text()	Extracts the text content inside an element.	//book/title/text()
[n]	Selects the n-th occurrence of an element (1-indexed).	//book[1]

Troubleshooting Common XPath Issues

• Empty Results Output: Verify that your node names match case-sensitively. XML is strictly case-sensitive (<Book> and <book> are treated as different nodes).
• Missing Root Element: Ensure your input XML code forms a valid, well-formed document with a single root tag wrapper.
• Incorrect Indexing: Remember that XPath positional indexes start at 1 instead of 0. Requesting //book[0] will return no nodes.
• Namespace Conflicts: If your XML includes namespaces (e.g., xmlns="[http://example.com](http://example.com)"), standard node names may fail to resolve unless local-name filtering or full namespace prefixing is applied.

Frequently Asked Questions (FAQs)

What is an XPath Tester?

An XPath Tester is a utility that allows developers to run XPath query expressions against an XML document to extract specific nodes, elements, or attribute values instantly.

Is my XML data safe when using this online tool?

Yes. All processing happens locally inside your web browser. Your XML payload and XPath queries are never uploaded or stored on any remote server.

What happens if my XML code is malformed?

If your XML code contains syntax errors (such as unclosed tags or invalid characters), the tool will fail to parse the document tree and will display an error message in the output area.

How do I extract elements based on attribute values?

Use square brackets containing an @ symbol. For example, //user[@status='active'] will select all <user> elements where the status attribute equals active.

Can I upload an .xml file directly from my computer?

Yes. Click the Upload XML button above the editor, select your local .xml document, and its contents will load into the input area automatically.

Why does my XPath expression return zero results?

Common causes include case mismatches in element names, incorrect positional indexing, missing attributes, or attempting to query invalid XML structure.

How does XPath differ from JSONPath?

XPath is designed specifically for querying hierarchical XML documents, supporting advanced parent/ancestor navigation. JSONPath is a similar query language tailored for navigating JSON object arrays.

Can I extract plain text without XML tags?

Yes. Append /text() to the end of your element path. For example, //product/name/text() extracts only the internal string without surrounding <name> tags.

How do I select the last element in an XML list?

Use the last() function inside a predicate. For example, //item[last()] selects the final <item> node within its parent group.