XML Formatter and Validator

XML pretty-print or minify, driven by the parsed DOM so attribute values containing angle brackets stay intact. CDATA, comments and the XML declaration are preserved.

Pretty-print

Minify

Indent

XML<?xml version="1.0" encoding="UTF-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><GetPriceResponse xmlns="https://example.com/prices"><Item sku="A-1001" currency="USD"><Name>Mechanical Keyboard</Name><Price>89.00</Price><!-- promotional --><Note><![CDATA[Ships in 2 days & includes cable]]></Note></Item><Item sku="A-1002" currency="USD"><Name>Monitor Arm</Name><Price>129.50</Price></Item></GetPriceResponse></soap:Body></soap:Envelope>

XML Formatter and Validator — Free Online Tool

Pretty-prints or minifies XML with configurable indentation, checking well-formedness through the browser's XML parser and reporting the failure position, preserving attribute order, CDATA sections, comments and the XML declaration, useful for reading SOAP responses, Maven POMs, Android manifests and RSS feeds that arrive as a single unreadable line.

How to use the XML Formatter and Validator

Open the tool above — it runs entirely in your browser, so your input never leaves this page.
Paste or type your input into the field, then press the relevant button (e.g. Encode / Decode, Generate, or Convert).
Copy the result from the output area with the copy button orCtrl/Cmd + C.
No signup, no upload, and no tracking — repeat as often as you need.

Frequently asked questions

Is this a validator or just a formatter?

Both, at the well-formedness level: the document is parsed before it is re-emitted, so unbalanced tags, bad entities and stray angle brackets are reported. It does not validate against a DTD or XSD, which requires the schema itself.

Are CDATA sections and comments kept?

Yes, in pretty-print mode, along with the XML declaration and attribute order. Minify mode drops comments, since removing them is the point of minifying.

Will formatting change my data?

Whitespace between elements is not significant in most XML vocabularies, so it is normalized. An element containing only text is kept on one line so its value is never altered by indentation.

Free & private — why use this XML Formatter and Validator

The XML Formatter and Validator runs 100% client-side in your browser. Your data is never uploaded to a server, no account is required, and the tool is completely free. It works offline once the page has loaded and is part of a growing collection of privacy-first developer utilities.

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