Both <iframe> and <embed> are used to include external content in a webpage, but they serve different purposes and behave differently.
Embeds another HTML document inside the current page.
Loads a full web page, including HTML, CSS, and scripts.
Supports attributes like src, width, height, sandbox, allowfullscreen, and loading.
Can be sandboxed for security, limiting what the embedded content can do.
Embeds external content such as PDFs, audio, video, or Flash (legacy).
Does not load a full HTML page; generally used for media or plugins.
Void element (no closing tag) and has attributes like src, type, width, and height.
Less flexible than <iframe> and does not support fallback content inside the tag.
In short: Use <iframe> to embed full web pages with interaction and sandboxing options. Use <embed> to include specific external media files or plugins with minimal interaction.
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