Struct Embed 

pub struct Embed;

The <embed> element - embeds external content at the specified point.

Purpose

The <embed> element represents an integration point for external application or interactive content, typically handled by a browser plugin. While historically used for Flash and other plugins, it’s now primarily used for embedding PDFs and other plugin-based content. Modern alternatives like <video>, <audio>, and <iframe> are preferred when applicable.

Content Categories

• Flow Content
• Phrasing Content
• Embedded Content
• Interactive Content
• Palpable Content

Permitted Content Model

• None (void element)

Common Use Cases

• Embedding PDF documents inline
• Displaying plugin-based content (legacy)
• Embedding specialized media types
• Integration with native applications
• Displaying Flash content (legacy, deprecated)

Key Attributes

• src: URL of the resource to embed (required)
• type: MIME type of the embedded content
• width: Width in CSS pixels
• height: Height in CSS pixels
• Any custom attributes for the plugin

Example

<!-- Embedding a PDF document -->
<embed src="/documents/manual.pdf"
       type="application/pdf"
       width="800"
       height="600">

<!-- Embedding with explicit dimensions -->
<embed src="/media/content.swf"
       type="application/x-shockwave-flash"
       width="640"
       height="480">

<!-- Simple embed without type -->
<embed src="/files/document.pdf" width="100%" height="500">

<!-- Embed with custom parameters -->
<embed src="/plugin/app.plugin"
       type="application/x-custom-plugin"
       width="400"
       height="300"
       quality="high">

Accessibility

• Provide alternative content mechanisms when possible
• Ensure embedded content is keyboard accessible
• Consider using modern alternatives (<iframe>, <video>, <audio>)
• Test with assistive technologies
• Provide download links as fallback

WHATWG Specification

• 4.8.6 The embed element

Trait Implementations

impl HtmlElement for Embed

const TAG: &'static str = "embed"

The HTML tag name (e.g., “div”, “span”, “img”).

const VOID: bool = true

Whether this is a void element (self-closing, no children allowed).

impl EmbeddedContent for Embed

impl FlowContent for Embed

impl InteractiveContent for Embed

impl PalpableContent for Embed

impl PhrasingContent for Embed