Also available in the Chrome extension Every Zase tool also lives in the free Developer Toolkit by Zase extension: fully offline, in a window or the side panel, one keyboard shortcut away.
Add to Chrome
About this XML Formatter & Validator
The XML Formatter and Validator pretty prints XML with attribute order preserved, validates it with clear errors, and minifies it back to one line for production. It handles the real-world mix: comments, CDATA sections, processing instructions and DOCTYPE declarations.
How to use the XML Formatter & Validator
- Paste your XML into the input panel.
- Format it to read the structure, and check the element count and depth stats.
- Minify it when you need the compact form, then copy or download.
Good to know
- Invalid XML is reported by the parser instead of being guessed at, so broken feeds surface quickly.
- Mixed content, where text and elements share a parent, is kept inline so documents are not mangled.
- Common jobs: RSS and sitemap files, SVG cleanup, and SOAP payloads from legacy services.