XML Formatter

Pretty-print, minify and validate XML in your browser with helpful syntax errors. Copy or download the result.

Runs entirely in your browser — no uploads

About this tool

XML Formatter parses your markup with the browser’s own XML engine, reporting precise line/column errors when something is malformed, then pretty-prints with configurable indentation or minifies to one line.

Processing is entirely local — appropriate for internal configs, sitemaps and API payloads.

Free · no account No file uploads Works on mobile

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FAQ

Which XML features are supported?
Namespaces, attributes, CDATA, comments and processing instructions — whatever DOMParser handles, which is the full XML spec.
Why did my HTML-ish input fail?
The parser is strict XML: every tag must close, entities must be valid. HTML tolerance like unclosed
tags will error.
Is my XML sent anywhere?
No. Parsing happens with your browser’s built-in DOMParser, fully offline.