How to use the XML Validator
- Paste your XML into the editor, or open a file.
- Validation runs automatically as you type.
- Fix any reported error using the line and column shown.
About XML
XML is a markup format for structured documents and data, still common in SOAP APIs, RSS feeds, Android resources, Maven builds and enterprise integrations. Elements can carry attributes as well as child elements.
Private by design
Developer data is often sensitive: API responses, tokens, customer records, internal configs. This XML Validator processes everything locally in your browser tab. There is no server round-trip, no logging and no storage of your input.
Frequently asked questions
Is this XML Validator free?
Yes. This XML Validator is completely free to use with no sign-up, no limits and no ads inside the tool.
Is my data uploaded to a server?
No. The XML Validator runs entirely in your browser using JavaScript. Nothing you paste is sent to DevT Pro or any other server.
What does the XML Validator check?
It parses your input with a standards-compliant XML parser and reports the first syntax error with its message.
Can I use the XML Validator offline?
Yes. XML Validator is also built into DevT Pro, a native app for Mac, Windows, iPad and Linux with 120+ developer tools that work fully offline. It is a $5.99 one-time purchase with no subscription.
