Developer
XML Validator
- Browser-based
- No signup
Paste XML to check that tags are well-formed and balanced. Errors include line and column details when available. Validation runs in your browser.
100% Client-Side
Your data never leaves your computer.
How to use this tool
1. Paste source text, code, or data into the XML Validator input panel. 2. Choose transform or validation options shown for XML Validator. 3. Run XML Validator or read automatic output. 4. Review errors or diff output carefully. 5. Copy the transformed result. Processing runs in your browser; inputs are not uploaded to our server.
Worked example
Example: paste a small sample input into XML Validator, run the transform or validation, and compare the output with the before text—fix any syntax errors reported before copying.
How it works
Paste XML to validate syntax instantly. Invalid XML shows parse errors with line and column when available. Validation runs entirely in your browser.
Limitations
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
Privacy and file handling
Your data is processed in your browser and is not uploaded to our server.
Frequently asked questions
Is the XML Validator free to use?
Yes. Utilnivo tools are free to use and do not require an account.
Are my inputs stored?
Utilnivo does not require an account. See the privacy note on this page for how your data is processed for this tool.
How do I get started with XML Validator?
Open the tool on this page, enter your inputs, and use the on-screen controls. No account is required.
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