HomeDeveloper Tools › XML Formatter

Free XML Formatter & Validator

Format messy XML into readable, indented code, validate its structure, or minify it down to a single line.

✅ Free✔️ Validates Syntax⚡ Instant

XML Input

Frequently Asked Questions

Does this validate my XML is well-formed?

Yes, the tool checks basic XML structure (matching tags, proper nesting) using the browser's built-in XML parser and reports errors if the document isn't well-formed.

What's the difference between formatting and minifying?

Formatting adds indentation and line breaks for readability. Minifying removes all unnecessary whitespace to reduce file size for production use.

Does this validate against a schema (XSD/DTD)?

No, this checks only that the XML is well-formed (correct syntax), not that it conforms to a specific schema definition.

XML Formatter, Beautifier, and Validator

This tool formats XML documents with proper indentation for readability, validates that the XML is well-formed, and can also minify XML down to a single compact line for production use.

Why Format XML?

XML generated by APIs, exported from software, or minified for production is often compressed onto a single line or has inconsistent indentation, making its nested structure hard to follow. Proper formatting — with each element on its own line and consistent indentation reflecting the document's nesting — makes the structure immediately clear, which speeds up debugging, reviewing API responses, and understanding configuration files.

What "Well-Formed" Means

A well-formed XML document follows XML's basic syntax rules: every opening tag has a matching closing tag (or is self-closing), tags are properly nested without overlapping, and there's exactly one root element containing everything else. This tool checks for well-formedness using the browser's built-in XML parser — but note that well-formed is different from "valid against a schema," which would additionally check that the document matches a specific expected structure (defined by a DTD or XSD), something this tool doesn't check.

Common Uses for XML

Privacy and Local Processing

All formatting, validation, and minification happens directly in your browser — your XML content is never sent to a server.

Popular Searches

xml formatter xml formatter online xml validator beautify xml xml pretty print