1. Paste Your XML
Enter or paste your XML document into the input textarea on the left.
XML Validator
Output
Note
Tools:
XML Validator
XML Validator
Processing...
Input
Output
XML Validator is a free browser-based developer utility by ToolPix. All formatting, validation, and encoding tasks run 100% locally in client-side memory via JavaScript and WebAssembly — your source code, tokens, and data are never uploaded or stored on any server.
Quick Steps
2. Click Validate
Click the Validate button to check your XML for well-formedness errors.
3. Review the Report
The output panel shows a success message or detailed error report with line numbers.
FAQ
Does this validate XML against an XSD schema?
No, this tool checks XML well-formedness only. It verifies that tags are properly nested, closed, and that the document structure is syntactically correct.
Is my XML data uploaded to a server?
No. All parsing and validation happens entirely in your browser. Your XML data never leaves your device, ensuring 100% privacy.
Can this tool automatically fix XML errors?
The tool identifies errors with line numbers but does not auto-fix them. You can correct the input based on the error report and re-validate.
What types of XML errors are detected?
The validator detects unclosed tags, mismatched tags, improperly nested elements, invalid characters, duplicate attributes, and other structural XML errors.
Is this XML validator tool free?
Yes, this XML validation tool is completely free to use with no sign-up required. Validate unlimited XML documents.
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