What is XML Formatter?

XML Formatter is a powerful tool for formatting, beautifying, minifying, and validating XML documents. Whether you're working with configuration files, SOAP messages, RSS feeds, or SVG graphics, this tool helps you quickly organize and verify your XML data.

Privacy First: All processing happens entirely in your browser. Your XML data never leaves your device, and we don't collect or store any information.

Why Use an XML Formatter?

XML documents often come in a single line or with inconsistent indentation, making them difficult to read and debug. This tool transforms messy XML into clean, well-structured code with proper indentation and syntax highlighting.

Beautify

Format XML with configurable indentation (2, 4, or 8 spaces) for easy reading and debugging.

Minify

Compress XML by removing unnecessary whitespace for production use and smaller file sizes.

Validate

Check XML well-formedness in real-time as you type with detailed error reporting.

Explore

View XML structure as an interactive, collapsible tree for better visualization.

Who Is This For?

This tool is designed for developers, data analysts, and anyone working with XML-based formats including:

SOAP web services and API messages
RSS/Atom feeds for content syndication
SVG graphics and vector images
XSLT stylesheets and transformations
XSD schemas and validation files
Configuration files for applications and systems

How to Use XML Formatter

Enter Your XML

Paste your XML into the input panel on the left. You can also upload an XML file using the upload button in the toolbar.

Supported formats: .xml, .svg, .xsl, .xslt, .xsd, .rss, .atom, .wsdl, and other text-based XML formats.

Choose Your Mode

Select how you want to process your XML:

Format — Beautify your XML with proper indentation. Choose between 2, 4, or 8 spaces using the indent buttons.
Minify — Remove all unnecessary whitespace to create a compact single-line output.

View the Output

The formatted result appears in the output panel on the right. Switch between two views:

Code View

See the formatted XML with syntax highlighting for tags, attributes, values, comments, and CDATA sections.

Tree View

Explore the XML structure as an interactive tree. Click the toggle buttons to expand or collapse nodes.

Export Your Result

Use the toolbar buttons to copy the formatted output to your clipboard or download it as an XML file.

Real-Time Validation

As you type or paste XML, the tool automatically validates it. The status bar shows whether your XML is valid or invalid, along with the line count, file size, and number of elements.

Instant Error Detection: If there's an error, you'll see a detailed error message with the line and column number, and the error line is highlighted in the editor.

Features

Beautify & Minify

Beautify Mode

Format for Readability

Customizable indentation (2, 4, or 8 spaces)
Proper line breaks and nesting
Preserves all content and structure
Ideal for development and debugging

Minify Mode

Compress for Production

Removes all unnecessary whitespace
Single-line compact output
Smaller file sizes
Perfect for production deployment

Real-Time Validation

Your XML is validated instantly as you type. The status bar updates in real-time to show whether the document is well-formed.

Instant Feedback

Validation happens as you type with no delay or manual action required.

Precise Error Location

Get exact line and column numbers for any validation errors.

Error Highlighting

Error lines are highlighted in the editor for quick identification.

Syntax Highlighting

The code view applies color-coded syntax highlighting to make XML structure easy to scan:

Element Type	Color	Style	Example
Tag Names	Indigo	Bold	`<element>`
Attribute Names	Amber	Regular	`name="value"`
Attribute Values	Green	Regular	`"value"`
Comments	Gray	Italic	`<!-- comment -->`
CDATA Sections	Purple	Regular	`<![CDATA[...]]>`
XML Declarations	Red	Regular	`<?xml version="1.0"?>`

Interactive Tree View

Switch to the tree view to explore your XML as a hierarchical structure. Each element shows its tag name, attributes, and child count.

Click toggle buttons to expand or collapse branches
View element attributes inline with their parent nodes
Text, comment, and CDATA nodes display with type badges
Navigate complex XML structures with ease
Identify document hierarchy at a glance

File Operations

Upload Files

Load XML files directly from your device.

Supports multiple XML-based formats
Drag and drop support
Instant processing

Download Results

Save formatted XML to your device.

One-click download
Preserves original filename
Copy to clipboard option

Editor Features

The input editor includes professional features to enhance your workflow:

Line Numbers — Track your position with synchronized scrolling
Tab Key Support — Insert indentation spaces with Tab key
Status Bar — View line count, file size, and element count in real-time
Keyboard Shortcuts — Paste with Ctrl+V (Cmd+V on Mac) for instant formatting
Auto-Scroll Sync — Line numbers scroll with your content

Your Data Stays Private

100% Client-Side Processing: All XML formatting, validation, and transformation happens entirely in your browser using JavaScript. Your data never leaves your device.

No Uploads

Your XML data never leaves your device. Everything is processed locally in your browser.

No Tracking

We don't collect, store, or track any of your data. Use the tool with complete confidence.

Frequently Asked Questions

What XML formats are supported?

The tool supports any well-formed XML document, including:

Configuration files — Application and system settings
SOAP messages — Web service requests and responses
RSS/Atom feeds — Content syndication formats
SVG graphics — Scalable vector images
XSLT stylesheets — XML transformations
XSD schemas — XML validation definitions

You can upload files with extensions: .xml, .svg, .xsl, .xslt, .xsd, .rss, .atom, .wsdl, and .txt.

What does "Invalid XML" mean?

This means your XML is not well-formed. Common issues include:

Missing closing tags — Every opening tag must have a matching closing tag
Unescaped special characters — Use & instead of &, < instead of <
Mismatched tag names — Opening and closing tags must match exactly (case-sensitive)
Missing root element — XML documents must have exactly one root element
Invalid attribute syntax — Attributes must be in quotes and properly formatted

Helpful tip: The error message will point you to the exact line and column number where the problem occurs.

Does the tool modify my XML content?

No. The formatter only changes whitespace and indentation. Your content remains exactly as it is:

Element names stay unchanged
Attributes and their values are preserved
Text content remains identical
Comments are kept as-is
CDATA sections are preserved

The minify mode removes unnecessary whitespace between tags but preserves all content within elements.

Is my data safe?

Yes, absolutely. All XML processing happens entirely in your browser using JavaScript. No data is sent to any server.

Privacy guarantee: You can safely use this tool with sensitive or confidential XML documents. Your data never leaves your device.

You can even use this tool offline once the page has loaded, as all functionality is client-side.

Can I use keyboard shortcuts?

Yes, the editor supports several keyboard shortcuts for improved workflow:

Tab — Insert indentation spaces (matches your selected indent size: 2, 4, or 8)
Ctrl + V (or Cmd + V on Mac) — Paste XML for instant formatting
Ctrl + A (or Cmd + A on Mac) — Select all content

The Tab key is particularly useful for manual indentation adjustments while editing.

What is the maximum file size?

Since all processing is done in your browser, the practical limit depends on your device's memory and processing power.

Typical Performance Several MB

Most modern devices can handle XML files of several megabytes without issues. For very large files (10MB+), processing time may increase depending on your device's capabilities.