Xml Formatter Online
Eautify and validate XML with syntax highlighting. Minify XML to reduce payload size. Error detection with line numbers.
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About XML Formatter & Validator Online
Validate, beautify, and minify XML with error detection. Supports both formatting (adding indentation) and minification (removing whitespace). Error messages include line numbers. All processing client-side.
XML Formatter & Validator Online is a free, browser-based utility that requires no login, no signup, and no installation. All processing happens entirely within your web browser using JavaScript — your data never leaves your device. The tool works on all screen sizes including mobile phones, tablets, and desktop computers.
How to use
- Enter your values in the input fields — results update instantly as you type.
- No submit button needed. The tool calculates in real time.
- Copy your result or share it via WhatsApp or Twitter using the buttons above.
- Use the workflow links below to chain into related tools for a complete task.
- All processing is browser-only. Nothing you enter is sent to any server.
Tool details
⚡ Next step — complete your workflow
Frequently asked questions
Common XML errors?
Unclosed tags, case-mismatch (XML is case-sensitive), special chars not escaped (& < > " '), multiple root elements, missing XML declaration.
XML vs JSON — which to use for APIs?
JSON is now preferred for REST APIs (smaller payload, native JS parsing). XML is still used in SOAP services, configuration files, and RSS feeds.
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