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HomeDeveloper ToolsXML & HTMLXML Validator
Developer ToolXML & HTMLPopular

XML Validator

Validate your XML documents for well-formedness and syntax errors. Get detailed error messages to fix issues quickly.

Updated 2025-01-152 min readCalzyra Developer Tools Team
XML Validator
xml
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<?xml version="1.0" encoding="UTF-8"?>
<catalog>
  <book id="1">
    <title>XML in Practice</title>
    <price>29.99</price>
  </book>
</catalog>
7 lines145 chars12 wordsxml

Output will appear here

Press Ctrl+Enter or start typing

Ctrl+Enter RunCtrl+Shift+F FormatCtrl+L ClearEsc Exit fullscreen

Quick Examples

Load sample data to get started

Supported Features

What this tool can do

🎨

Format & Beautify

Auto-format code with proper indentation

📦

Minify

Compress code by removing whitespace

✅

Validate

Check syntax and structure for errors

🔍

Tree View

Visualize JSON as expandable tree

📊

Statistics

Detailed analysis of your content

📋

Copy & Download

Export results in various formats

🌙

Dark Mode

Easy on the eyes for long sessions

⌨️

Keyboard Shortcuts

Navigate efficiently with hotkeys

How It Works

Methodology and approach

Parse and check well-formedness

The validator parses the document with a real XML parser and reports the first problem it finds - tag nesting, attribute syntax, undeclared entities - with the line and column it occurred on.

Purpose

This tool is designed to help developers, engineers, and anyone working with code and data perform common development tasks quickly and accurately. It processes your input using proven algorithms and displays detailed results.

When to Use

Use this tool whenever you need to format, validate, transform, or analyze code, data, or configuration. It is useful for software development, debugging, data processing, and everyday programming tasks.

Important Note

While this tool provides accurate results using well-tested methods, always verify critical outputs for your specific use case. Some edge cases may require additional validation depending on your requirements.

Frequently Asked Questions

Common questions about this tool

XML & HTML Tools

XML FormatterXML ValidatorXML MinifierXML to JSON ConverterXML to CSV ConverterHTML FormatterHTML MinifierHTML ValidatorHTML to Markdown ConverterHTML Entity EncoderHTML Entity DecoderHTML to Text ConverterXML Tree ViewerXML XPath TesterHTML Meta Tag Generator

Related Tools

XML Formatter

Format and prettify XML documents

XML Minifier

Minify XML by removing whitespace

XML to JSON Converter

Convert XML to JSON format

HTML to Markdown Converter

Convert HTML to clean Markdown format

Quick Links

All Developer ToolsXML & HTML Category