Question 1

What is XML?

Accepted Answer

XML (eXtensible Markup Language) is a text-based format for storing and transporting structured data. It uses nested tags similar to HTML and is widely used in configuration files, web services (SOAP), RSS feeds, SVG graphics, and data interchange.

Question 2

What is the difference between XML formatting and minifying?

Accepted Answer

Formatting (beautifying) adds indentation and line breaks to make XML readable for humans. Minifying removes all unnecessary whitespace to reduce file size, which speeds up network transmission and parsing.

Question 3

Is my XML data sent to a server?

Accepted Answer

No. All formatting, validation, and parsing happens entirely in your browser using the built-in DOMParser. Your XML data never leaves your device.

Question 4

Why is my XML invalid?

Accepted Answer

Common XML errors include: unclosed tags, mismatched tag names, missing quotes around attribute values, illegal characters like & or < in text content (use & and < instead), and multiple root elements. The validator will show the first error it encounters.

Question 5

Does this tool support XSD, SVG, and RSS files?

Accepted Answer

Yes. Any well-formed XML document is supported including XSD schema files, SVG graphics, RSS and Atom feeds, SOAP envelopes, and custom XML formats. Use the Open button or drag and drop your file directly onto the editor.

XML Formatter & Validator — Beautify, Minify, Tree View