xml2rfc Preview

Preview RFC XML files as HTML and see xml2rfc warnings and errors directly in VS Code.

What it does

• Shows xml2rfc warnings and errors in the Problems panel as you type
• Generates HTML previews of RFC XML documents
• Updates automatically as you edit the XML content

Requirements

• Install xml2rfc: pip install xml2rfc
• VS Code 1.75.0 or later

Recommended: Install a generic XML extension like XML by Red Hat for general XML validation and formatting. This extension only shows xml2rfc-specific errors.

Usage

1. Open an RFC XML file in VS Code
2. xml2rfc warnings and errors appear automatically in the Problems panel
3. Click the preview button (📄 icon) in the editor title bar
4. HTML preview opens in a side panel

Troubleshooting

• xml2rfc not found: Make sure xml2rfc is installed and in your PATH
• No preview appears: Only works with valid RFC XML files (must have <rfc> root element)
• XML errors: Check the Problems panel for detailed error locations

License

MIT