HTML Iframe Generator [2025]

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Quickly generate HTML iframe code for embedding external content. Customize dimensions, behavior, and security settings with ease.

✓ Set Source & Title✓ Customizable Dimensions✓ Loading & Fullscreen Options✓ Sandbox & Feature Policy✓ Live Preview (Frame Only)✓ Instant HTML Code

Important for screen readers.

`lazy` defers loading until iframe is near viewport.

Semicolon-separated list of features to allow (e.g., `geolocation; microphone`).

Check options to **allow** them. Unchecked means restricted.

Embedded Content

(600px x 400px)

Content from https://example.com would load here.

This is a visual representation of the frame's size and border. Actual content is not loaded here for security.

<iframe src="https://example.com" title="Embedded Content" width="600px" height="400px" allowfullscreen loading="lazy" allow="accelerometer; gyroscope; picture-in-picture; fullscreen" sandbox="allow-forms allow-modals allow-popups allow-same-origin allow-scripts"></iframe>

<!-- Recommended CSS to ensure no border -->
<style>
  iframe {
    border: none; /* Recommended modern approach */
  }
</style>

Ensure the `src` URL is correct and from a trusted source. Adjust `sandbox` and `allow` attributes based on the required functionality and security needs.

What is an HTML Iframe?

An HTML Inline Frame iframe is an HTML element used to embed another HTML document within the current one. It essentially creates a nested browsing context, allowing you to display content from a different source (like a YouTube video, a map, or another webpage) directly on your page.

Key attributes control the iframe's behavior and appearance:

  • `src`: Specifies the URL of the page to embed.
  • `width` & `height`: Define the dimensions of the frame.
  • `title`: Provides a description for accessibility (crucial!).
  • `allowfullscreen`: Allows the iframe content to go fullscreen.
  • `loading="lazy"`: Defers loading until the iframe is close to the viewport, improving initial page load performance.
  • `allow`: Controls which browser features (like camera, microphone, geolocation) the embedded content can access (Feature Policy).
  • `sandbox`: Restricts the actions the embedded content can perform (e.g., running scripts, submitting forms, navigating the top-level page) for security.

This generator helps you configure these attributes and generates the necessary HTML code snippet.

Security Considerations (`sandbox` & `allow`)

Important: Embedding Content Safely

Embedding content from external sources using iframes can introduce security vulnerabilities if not handled carefully. The embedded page might try to execute malicious scripts, redirect the user, or access sensitive browser features.

Use the following attributes to mitigate risks:

  • `sandbox` Attribute: This is the most critical security feature. By default (if the attribute is present with no values), it applies maximum restrictions. You must explicitly add values (like `allow-scripts`, `allow-same-origin`, `allow-forms`) to grant specific permissions to the iframe content. **Only allow permissions that are absolutely necessary for the embedded content to function.** Avoid `allow-top-navigation` unless strictly required and trusted.
  • `allow` Attribute (Feature Policy): This controls access to powerful browser features like the camera, microphone, geolocation, fullscreen API, etc. Specify only the features the embedded content genuinely needs. For example: `allow="geolocation; microphone 'src'; camera 'none'"`.

**Always embed content only from sources you trust.** This generator provides controls for these attributes, but understanding their implications is crucial for maintaining website security.

How to Use This Generator

  1. Enter Source URL: Provide the full URL of the content you want to embed in the `src` field.
  2. Set Title: Add a descriptive `title` for accessibility. This helps users using screen readers understand the iframe's content.
  3. Define Dimensions: Set the `width` and `height` using pixels (px) or percentage (%).
  4. Configure Behavior: Use the switches and dropdowns to control `allowfullscreen`, `loading` behavior (lazy loading is recommended), and whether to show a border (CSS `border: none;` is recommended over the old `frameborder="0"`).
  5. Adjust Security (Important!):
    • Review the `allow` attribute (Feature Policy) and modify the semicolon-separated list if needed.
    • Carefully select the necessary permissions in the `sandbox` section. Remember, unchecked means restricted. Only enable what the embedded content requires.
  6. Preview Frame: The preview area shows a placeholder representing the iframe's size and border style. The actual content is not loaded in the preview.
  7. Copy HTML: Click the "Copy HTML" button to get the generated iframe code, including a suggestion for CSS to hide the border if selected.
  8. Embed: Paste the copied HTML code into your website's HTML where you want the content to appear.

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