XML Formatter & Validator
Format, validate, and minify XML instantly in your browser — nothing is uploaded.
Output
Format and validate XML online
Paste XML and it’s pretty-printed as you type — no upload, no signup. Everything runs locally in your browser, so even sensitive payloads never leave your machine.
If the XML is malformed you get a plain-language error instead of a silent failure.
FAQ
Is my data sent anywhere? No — parsing happens entirely in your browser, using a pure JavaScript implementation.
What XML features are supported? The formatter handles elements, attributes, text nodes, comments, CDATA sections, and processing instructions. It validates basic tag balance and nesting.