XML 1.0 Beautifier, Minifier & Tree Inspector

XML Formatter

Beautify, format, validate, and minify XML documents with proper indentation, CDATA block preservation, well-formedness validation, and interactive tree inspection.

Load Preset Template:
Indent Size:
Indent Type:
Input XML Code
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Format valid XML to inspect interactive DOM tree.
XML Structure Valid: No syntax errors detected.
Valid XML 1.0
Lines:0|Input Chars:0|Output Chars:0|Byte Size:0 B|Max Depth:0|Elements:0|Attributes:0|CDATA Blocks:0|Comments:0|Instructions:0
XML 1.0 Standards & Developer Specification Reference
CDATA Block Preservation

CDATA sections (<![CDATA[ if (a < b && b > c) ]]>) are preserved without escaping <, >, or & symbols inside script payloads.

XXE Security Safeguards

Parses XML safely using browser DOMParser without external entity resolution, protecting the system against XML External Entity (XXE) and Billion Laughs expansion attacks.

Single Root & Namespace Rules

Enforces strict XML well-formedness rules: single root element, attribute quote consistency, matching opening and closing tags, and XML namespace preservation.

Processing Instructions & Comments

Preserves XML prolog declarations (<?xml version="1.0" ... ?>), processing instructions (<?xml-stylesheet ... ?>), and multiline comments.