What is the difference between HTML and XML?

HTML has predefined tags and allows unclosed tags; XML has custom tags and requires strict closing. XML requires all attributes to have values, proper nesting, and is case-sensitive.

Is the converted XML well-formed?

Yes. The tool automatically closes unclosed tags, normalizes attribute values, and handles self-closing tags to ensure valid XML output.

Does it support HTML5 tags?

Yes. HTML5 semantic tags (header/nav/article etc.) and void elements (img/br/hr/input etc.) are correctly converted.

Is my data uploaded to a server?

No. All conversion happens locally in your browser. Your data never leaves your device.

Can I customize the XML declaration?

Yes. You can set the XML version, encoding, and whether to include the declaration via options.

Does it support file drag and drop?

Yes. You can drag and drop HTML files onto the input area for automatic reading and conversion.

Free HTML to XML Converter

Home › Developer Tools › HTML to XML

Convert HTML code to well-formed XML with auto-closing tags and normalized attributes

Zero Dependencies · Works Offline

📝 HTML Input

Indent: Add XML declaration Self-close void tags Encoding:

📜 History

What Can the HTML to XML Converter Do?

The HTML to XML Converter is a free online developer tool that transforms HTML code into well-formed XML with a single click. It automatically handles syntax differences between HTML and XML: closes unclosed tags, converts self-closing tags, normalizes attribute values, and adds XML declarations. Ideal for migrating HTML data to XML systems, generating RSS/Atom feeds, and XHTML conversion. Everything runs locally: Enter text and other values are processed on your device, never sent to a server—no data is ever uploaded to a server.

Core Features

Auto-closing Tags: Converts HTML unclosed tags (img, br, input) to XML self-closing format (img/, br/, input/)
XML Declaration: Optionally adds the <?xml version="1.0" encoding="UTF-8"?> header
Attribute Normalization: Converts HTML boolean attributes (disabled, checked) to attribute="value" format
Formatted Output: Supports 2-space, 4-space, or tab indentation for clean XML structure
History: Automatically saves your last 5 conversions

How to Use

1. Paste your HTML code into the input area, or click "Load Example" for a quick demo.

2. Configure options: indentation, XML declaration, encoding.

3. Click "Convert" or press Ctrl+Enter.

4. View the generated XML code below.

5. Click "Copy" or download as a .xml file.

Use Cases

Case 1: XHTML Migration

Convert legacy HTML pages to XHTML format that meets XML parser requirements for use in XML workflows.

Case 2: RSS/Atom Feed Generation

Extract HTML content and convert it to XML-formatted RSS feed entries for content syndication.

Case 3: Data Migration

Convert HTML forms or table data to XML format for system integration and API data exchange.

Technical Background

Both HTML and XML are subsets of SGML, but with different syntax rules. HTML allows unclosed tags (p, li), attribute shorthand (disabled), and is case-insensitive. XML requires all tags to be closed, all attributes to have values, and is strictly case-sensitive. XHTML is the XML-ized version of HTML that follows XML syntax rules. In the HTML5 spec, void elements (img/br/hr/input/meta/link) don't need closing tags, but in XML they must be self-closed.

🔄 HTML to XML Converter