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Self-Closing HTML Tags Reference

Complete reference guide for HTML void elements (self-closing tags), SVG elements, and MathML elements

Filter elements by type

Filter elements by name or description

Include syntax examples for HTML elements (when applicable)

Choose the output format

Key Facts

Category
Development
Input Types
select, text, checkbox
Output Type
text
Sample Coverage
4
API Ready
Yes

Overview

This reference tool provides a comprehensive guide to self-closing tags, including HTML void elements, SVG elements, and MathML elements, helping developers write clean and standards-compliant code.

When to Use

  • •When you need to verify if a specific HTML element requires a closing tag.
  • •When working with SVG or MathML and need to confirm the correct syntax for void elements.
  • •When debugging markup issues caused by improperly closed or unclosed tags.

How It Works

  • •Select the element category (HTML, SVG, or MathML) to filter the list.
  • •Use the search bar to find specific tags by name or description.
  • •Toggle the 'Include Code Examples' option to see proper syntax for each element.
  • •Choose your preferred output format to copy or export the reference data.

Use Cases

Validating markup structure during front-end development to ensure compliance with HTML5 standards.
Creating documentation or style guides for team members regarding proper tag usage.
Quickly checking syntax requirements for complex SVG graphics embedded in web pages.

Examples

1. Verifying HTML5 Void Elements

Front-end Developer
Background
A developer is refactoring a legacy codebase and wants to ensure all tags are written in modern, clean HTML5 syntax.
Problem
Unsure which tags are strictly void and if they require closing slashes.
How to Use
Set 'Element Type' to 'HTML Void Elements' and enable 'Include Code Examples'.
Example Config
elementType: html, includeExamples: true
Outcome
A clear list of tags like <img>, <br>, and <input> with correct syntax examples, allowing for quick cleanup of the codebase.

2. Debugging SVG Markup

UI Designer
Background
A designer is manually editing an SVG file to optimize it for a web project.
Problem
The SVG is not rendering correctly in the browser due to improper tag nesting and closing.
How to Use
Set 'Element Type' to 'SVG Elements' and search for the specific tag causing issues.
Example Config
elementType: svg, search: path
Outcome
Confirmation that the <path> element requires a closing tag, resolving the rendering error.

Try with Samples

html, image, svg
HTML with Images Samples
HTML source code samples with images for testing extraction
title token html
image
SVG Samples
Scalable Vector Graphics (SVG) samples demonstrating various SVG features and techniques
matched family image,svg
image, svg
D3.js Data Visualization Samples
Comprehensive D3.js data visualization examples including charts, maps, animations, and interactive visualizations
matched family image,svg
image, svg
XML Samples
XML (eXtensible Markup Language) format examples from simple to complex structures
matched family image,svg
image, svg

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FAQ

What is a void element in HTML?

A void element is an element that cannot have any child nodes, such as text or other elements. They do not require a closing tag.

Do I need to add a slash at the end of HTML void tags?

In HTML5, the trailing slash is optional for void elements. However, it is required in XHTML and recommended by some style guides for consistency.

Are SVG elements always self-closing?

No, only specific SVG elements are self-closing. Others require an explicit closing tag to function correctly within the DOM.

Can I export this reference list?

Yes, you can select JSON or Markdown as the output format to easily integrate the data into your own documentation or projects.

Does this tool cover all HTML tags?

This tool focuses specifically on self-closing (void) elements, SVG elements, and MathML elements, rather than the entire HTML specification.

API Documentation

Request Endpoint

POST /en/api/tools/self-closing-html-tags

Request Parameters

Parameter Name Type Required Description
elementType select No Filter elements by type
search text No Filter elements by name or description
includeExamples checkbox No Include syntax examples for HTML elements (when applicable)
format select No Choose the output format

Response Format

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}
Text: Text

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-self-closing-html-tags": {
      "name": "self-closing-html-tags",
      "description": "Complete reference guide for HTML void elements (self-closing tags), SVG elements, and MathML elements",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=self-closing-html-tags",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]