HomeXML Formatter & Compressor

XML Formatter & Compressor

Format and validate XML data with syntax highlighting

About XML Formatter Tool

XML (eXtensible Markup Language) is the cornerstone of modern data exchange, widely used in web services, configuration files, and document storage. However, raw XML is often difficult to read due to lack of formatting or compression.

This tool is a powerful browser-side tool designed for quickly formatting (beautifying), compressing, and validating XML code. Whether you're debugging SOAP APIs, editing configuration files, or analyzing exported data, this tool ensures your XML structure is clear, error-free, and easy to read.

Key Features

Format and beautify XML with customizable indentation
Compress XML to reduce file size
Validate XML syntax and structure
Dark theme syntax highlighting
Option to preserve or remove comments
Collapse empty tags to self-closing format

XML Syntax Basics

Elements: Building blocks of XML documents
Attributes: Additional information in opening tags
Declaration: <?xml version="1.0"?> at document start
Comments: <!-- comment text --> format
CDATA: Special sections for unescaped text
Namespaces: Avoid element name conflicts

Common Use Cases

API response debugging and formatting
Configuration file editing (web.xml, pom.xml)
SOAP web service development
Inter-system data exchange
RSS/Atom feed processing and validation

How to Use

Using our tool to format XML is very simple:

  1. 1Input Data: Paste your XML string into the editor.
  2. 2Configuration Options: Choose your preferred indentation (2 spaces, 4 spaces, or tab), and enable options like "Collapse Empty Tags".
  3. 3Execute Processing: Click Format to beautify, Minify to reduce size, or Validate to check for errors. Results will be displayed instantly with syntax highlighting.

Why Choose Our XML Tool?

Instant Validation

Detect syntax errors immediately. Our tool highlights unclosed tags, missing attributes, and structural issues, helping you fix bugs faster.

Beautify & Minify

Convert compressed XML into readable tree structures (beautify), or remove all whitespace to reduce file size for production (minify).

Secure Client-Side Processing

Your data never leaves your browser. All formatting and validation is done locally using JavaScript, ensuring 100% data privacy.

Frequently Asked Questions (FAQ)

How do I format unreadable XML?

Simply paste the messy XML string into the input box and click the "Format" button. The tool will automatically indent and organize the code structure.

Is my private XML data secure?

Yes. This tool runs entirely in your web browser. We do not upload or store your user data on our servers.

What's the difference between Minify and Format?

"Format" adds spaces and line breaks to make code easy for humans to read. "Minify" removes all unnecessary characters to reduce file size, suitable for machine parsing.

Does this tool support large XML files?

Yes, since it processes data locally in browser memory without network transfer, it can efficiently handle large files.

How do I fix "Invalid XML" errors?

Click the "Validate" button. The tool will display specific error messages to help you pinpoint syntax issues.

Data is processed locally in your browser by default and will not be uploaded to any server. Upload will be clearly indicated if required.

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