XML Formatter

Beautify, minify and validate XML data.
INPUT
OUTPUT

Beautify & Minify

Format or compress XML with proper indentation.

Validate

DOM-based XML validation with error messages.

Copy Result

One-click copy to clipboard.

Client-side

All processing in your browser. No data uploaded.

About XML Formatter

The XML Formatter is a free, browser-based tool for beautifying, minifying, and validating XML documents. XML is used everywhere — REST API responses, SOAP web services, configuration files, RSS/Atom feeds, SVG graphics, Android layouts, Maven POM files, and countless data exchange formats. When XML arrives as a compact single-line string or is poorly indented, understanding its structure is time-consuming and error-prone. The beautifier parses the tag hierarchy and adds consistent indentation so that every parent-child relationship is immediately visible. Prolog declarations (<?xml version="1.0"?>), self-closing tags, and XML comments are all handled correctly without disrupting the indent level. The built-in validator uses the browser's native DOMParser to check for well-formedness errors such as unclosed tags, mismatched element names, illegal characters, and missing attribute quotes — displaying the exact error message so you can fix it quickly. The minifier strips all inter-element whitespace to produce the most compact representation. Everything runs in your browser, so your XML data — which may include API keys in attributes, private records, or internal configuration — is never sent anywhere.

How to Use XML Formatter

  1. Paste your XML content into the left input panel.
  2. Select the indentation size (2 or 4 spaces) from the dropdown at the bottom.
  3. Click "Beautify" to format the XML with proper indentation and line breaks.
  4. Click "Validate" to check whether the XML is well-formed — any errors will be displayed in red in the output panel.
  5. Click "Minify" to compress the XML into a single compact line.
  6. Click "Copy" to copy the output to your clipboard.

Frequently Asked Questions

What kind of XML validation does this tool perform?

The tool checks for XML well-formedness using the browser's built-in DOMParser. This catches unclosed tags, mismatched tag names, illegal characters, and malformed attribute syntax. It does not validate against an XSD or DTD schema.

Can I use this for SVG files?

Yes. SVG is a subset of XML, so SVG files can be pasted in, beautified, validated, and minified using the same tool.

Does it handle XML namespaces?

Yes. Namespace declarations (xmlns:prefix="uri") are treated as regular attributes and are preserved correctly during formatting.

Is this safe for sensitive XML data like API responses?

Yes. All processing runs entirely in your browser using client-side JavaScript. Your XML data is never uploaded to any server.

What is the difference between well-formed and valid XML?

Well-formed XML follows the basic syntax rules of XML (correct tag nesting, closed tags, etc.). Valid XML additionally conforms to a specific schema (XSD or DTD). This tool checks well-formedness only.

The Complete Guide to XML Formatter: Free & Fast Online Utility

Professional, secure, client-side XML Formatter designed for developers, designers, and digital creators

In modern digital workflows, speed, accuracy, and security are paramount. XML Formatter is built to solve your daily challenges: Beautify, minify and validate XML data.. Instead of installing heavy desktop programs or writing custom conversion scripts, you can accomplish your tasks instantly on Metoolzy with zero friction.

Why Choose Metoolzy's XML Formatter?

  • Lightning Fast Execution: Real-time processing in milliseconds to accelerate your daily workflow.
  • 100% Private & Secure: Client-side execution ensures your data never leaves your browser or touches external servers.
  • Completely Free Forever: No paywalls, no subscription traps, and no account registration required.
  • Clean & Modern UI: Thoughtfully designed for seamless usability across desktop, tablet, and mobile browsers.

How to Use XML Formatter in 3 Simple Steps

  1. Open the XML Formatter page on Metoolzy.
  2. Enter or paste your raw input into the workspace, or upload your source file.
  3. Inspect the real-time output and click Copy or Download to use your result.

Feature Comparison Table

Feature Metoolzy XML Formatter Standard Online Tools Desktop Software
Pricing 100% Free Forever Often freemium / Ads-heavy Costly recurring license
Data Privacy Client-side local execution May store data on cloud servers Local processing
Speed Instantaneous (<100ms) Subject to server latency Hardware dependent
Installation Zero installation needed Zero installation Requires disk space & setup

Practical Applications & Use Cases

  • Software Engineers: Streamline data transformation, debugging, and format validation in development workflows.
  • UI/UX Designers: Quick utilities for color, format, and interface asset optimization.
  • Content Creators & Marketers: Format and structure digital assets efficiently without specialized tools.

Frequently Asked Questions (FAQ)

Does XML Formatter store or log my confidential data?

No. Metoolzy processes everything locally inside your browser using client-side JavaScript. Nothing is sent to our servers.

Can I use this tool on my mobile phone or tablet?

Yes, our interface is fully responsive and optimized for touch devices.

Are there any usage quotas or limits?

No, you have unlimited free access with no restrictions.