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XML Formatter & Beautifier Online

Beautify minified or unindented XML strings into structured, readable markup. Indent child elements with two or four spaces, preserve attributes and self-closing tags, and validate basic tag hierarchy directly in your web browser with zero server transmission.

Format minified XML into readable trees

Paste raw XML into the editor and choose two-space or four-space indentation. The formatter inspects start tags, end tags, comments, and CDATA sections, generating clean line breaks and hierarchical indentations that clarify data relationships.

Handling XML declarations, CDATA and comments

Special tokens like XML processing instructions, DOCTYPE declarations, CDATA containers, and comments are handled without corrupting enclosed text. Attributes inside opening tags retain their exact key-value formatting.

Self-closing tags and element nesting

Self-closing tags are recognized and indented at their current depth without erroneously increasing indentation for subsequent siblings. Opening and closing tag pairs maintain balanced indentation levels.

Confidential XML payload privacy

XML often carries sensitive information such as SAML tokens, SOAP payloads, enterprise configurations, and API credentials. Our client-side implementation guarantees your XML files never leave your device.

Technical references: W3C XML 1.0 Specification · XML Introduction

XML Formatter & Beautifier FAQs

The tool formats standard XML documents, RSS and Atom feeds, SOAP envelope requests, SVG markup, and XML sitemaps.
No. Content enclosed within CDATA blocks is preserved verbatim without character modification or interior tag insertion.
Tags ending in a slash and angle bracket are recognized as self-contained elements and do not alter the indentation of subsequent sibling nodes.
It validates structural element nesting and well-formedness; it does not validate against external DTD or XSD schemas.
Yes. The formatter tokenizes tags independently of original whitespace and inserts uniform indentation.
No. All formatting logic runs inside your browser using JavaScript. No external requests are made.
Malformed markup with unclosed tags or syntax violations will be highlighted or flagged during processing.
XML requires strict well-formedness where every non-void element must have an explicit closing tag or self-closing slash, unlike HTML5 which permits unclosed tags.
Yes. You can copy the formatted XML to your clipboard with one click or download it as a clean .xml file.

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