XML · Formatter

XML Formatter & Beautifier

Format and beautify XML code online. Indent XML tags, align attributes, fix malformed tags, and pretty print XML documents in your browser.

Interactive Editor

Indent:

Unformatted XML

Ln 1, Col 1·0 lines · 0 B

Auto-executes on edit

Formatted XML Output

0 lines · 0 B

100% In-Browser Privacy: All conversions, formatting, and validations run purely on your machine using client-side JavaScript. Your data, code snippets, and environment variables are never transmitted to any server or recorded in logs.

Specifications

How XML Formatter Works

Parses XML string into DOM nodes.
Applies structured tag indentation with nested element alignment.
Formats attributes and self-closing tags cleanly.

Demonstration

Example Input & Output

Formats compacted XML tags into a clean hierarchy with 2-space indentation and an XML declaration header.

Unformatted XML

<catalog><book id="bk101"><author>Gambardella, Matthew</author><title>XML Developer's Guide</title><genre>Computer</genre><price>44.95</price></book></catalog>

Formatted XML Output

<?xml version="1.0" encoding="UTF-8"?>
<catalog>
  <book id="bk101">
    <author>Gambardella, Matthew</author>
    <title>XML Developer's Guide</title>
    <genre>Computer</genre>
    <price>44.95</price>
  </book>
</catalog>

Applications