XML Validator is a browser-native linting tool that strictly checks your XML documents for syntax errors and structural integrity. Dealing with massive XML feeds or complex SOAP XML payloads often results in cryptic parsing errors caused by a single missing closing tag or an unescaped ampersand. This utility evaluates your code instantly, providing precise line and column numbers to help you isolate frustrating XML format errors locally.
Because XML is highly rigid, any syntax failure (like a missing quote on an attribute or an illegal character) completely breaks standard parsers (DOMParser). This utility leverages native browser XML parsing engines to perform a dry-run conversion. It intercepts native exception traces, securely translating them into human-readable line and column errors natively.
Currently, this tool strictly performs "well-formedness" syntax validation to check for structural integrity (missing tags, illegal characters, attribute quotes). It does not perform semantic validation against external XML Schema Definitions (XSD) natively.
Absolutely cleanly! The engine aggressively parses the error trace to return the exact line number, column number, and expected tag structure naturally.
Yes absolutely. The entire validation engine utilizes native DOMParser functionality completely securely inside your browser instance seamlessly. No data is transmitted to an external server.
Yes! Placing an unescaped `<` or `&` inside standard XML text nodes is a common failure point that this utility intelligently catches securely.
Tool workspace
Free XML Validator online — instantly check XML syntax, detect malformed tags, and validate against XML 1.0 specifications securely in your browser. No login required.
Output
Input
<root> <name>John</root>
Output
