Free 100% In-Browser Tool

XML Formatter: Beautify, Indent & Minify XML

Format, beautify, and minify XML code with 2-space or 4-space indentation and tag validation.

Quick Answer:Paste raw XML into the editor to automatically format tag hierarchies with clean indentation and line breaks.

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Privacy First: 100% Client-Side Processing

Processed in your browser. Files are never uploaded.

How to Use the XML Formatter & Beautifier (Syntax Validator)

1Paste your raw, minified, or unindented XML into the left input editor.
2Select your preferred indentation spacing (2 spaces or 4 spaces) or click 'Minify XML'.
3Inspect the beautified output in the right editor.
4Click 'Copy XML' to copy the formatted code to your clipboard.

Depth = Depth + 1 on <tag> | Depth = Depth - 1 on </tag>

Splits XML into lexical tokens (opening tags, closing tags, self-closing tags, and text nodes), tracking tag depth to apply clean indentation.

Input: <catalog><book id="1"><title>XML Guide</title></book></catalog>

Explanation: Indents nested child nodes cleanly.

Result: Formatted with 2-space hierarchy and proper linebreaks

Input: <config><setting enabled="true"/><timeout val="30"/></config>

Explanation: Maintains correct depth across mixed elements.

Result: Recognizes self-closing tags (/>) without falsely increasing nesting depth

Input: Multi-line indented XML with whitespace

Explanation: Reduces payload byte size for web APIs and SOAP payloads.

Result: Single-line compact XML with all inter-tag whitespace removed

What is XML beautification?▼

Beautification adds structured indentation, spaces, and line breaks to raw XML text so developers can read and debug the data structure easily.

Is XML case-sensitive?▼

Yes, XML is strictly case-sensitive. The tag <Title> is completely different from <title>.

Does this formatter work with large XML files?▼

Yes, our tokenized parser handles multi-megabyte XML files smoothly within your browser memory.

Are my XML documents uploaded to a server?▼

No. All parsing and formatting occurs 100% locally in your browser, keeping sensitive API payloads completely secure.

Is this tool free?▼

Yes, 100% free with unlimited formatting.

•Forgetting to close tags (every opening tag <tag> must have a matching closing tag </tag> or be self-closing <tag/>).
•Using unescaped special characters like & or < inside text values (use & and <).
•Mismatched tag case sensitivity (XML is strictly case-sensitive, so <Item> does not match </item>).

✓XML supports attributes, comments, namespaces, and document schema definitions (XSD).
✓JSON has a simpler key-value structure, native JavaScript parsing, and smaller bandwidth footprint for modern REST APIs.

Last reviewed & updated: 2026-11-01

Free & Open Access

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