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XML Validator
Validate XML syntax, unclosed tags, and well-formedness according to W3C standards.
Kurzübersicht:
Validate XML syntax and find malformed tags, unquoted attributes, and namespace errors.
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Input & Controls
0 characters
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What is XML Validator?
Test XML documents for well-formedness and syntax errors with line-number error reporting.
Unlike traditional online utilities that upload your sensitive payloads to a remote server, TechnoLila's XML Validator executes 100% locally in your web browser using modern JavaScript APIs, HTML5 Canvas, and SVG vector rendering. No barcodes, asset IDs, Wi-Fi credentials, tokens, or proprietary payloads ever leave your device.
How to Use XML Validator Online
Paste XML and click "Validate XML".
XML Validator Example
Example Input:
<note><to>User</to><from>Admin</note>Example Output:
XML Error: Closing tag mismatch (<from> closed by </note>)Common Use Cases
Testing sitemaps, validating config files before deploying.
Common Mistakes & Gotchas
Mismatched casing in opening and closing tags.
Frequently Asked Questions
What makes an XML document well-formed?
It must have a single root element, all tags must be closed, and attribute values must be enclosed in quotes.
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