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The HTML Inline Frame element (<iframe>) represents a nested browsing context, embedding another HTML page into the current one.

Each embedded browsing context has its own session history and document. The browsing context that embeds the others is called the parent browsing context. The topmost browsing context — the one with no parent — is usually the browser window, represented by the Window object.

Because each browsing context is a complete document environment, every <iframe> in a page requires increased memory and other computing resources. While theoretically you can use as many <iframe>s as you like, check for performance problems.

Content categories Flow content, phrasing content, embedded content, interactive content, palpable content.
Permitted content Fallback content, i.e. content that is normally not rendered, but that browsers not supporting the <iframe> element will render. (RSS readers and email clients often show the fallback content instead.)
Tag omission None, both the starting and ending tag are mandatory.
Permitted parents Any element that accepts embedded content.
Permitted ARIA roles application, document, img
DOM interface HTMLIFrameElement

Attributes

This element includes the global attributes.

allow
Specifies a feature policy for the <iframe>.
allowfullscreen
Set to true if the <iframe> can activate fullscreen mode by calling the requestFullscreen() method.
This attribute is considered a legacy attribute and redefined as allow="fullscreen".
allowpaymentrequest
Set to true if a cross-origin <iframe> should be allowed to invoke the Payment Request API.
This attribute is considered a legacy attribute and redefined as allow="payment".
csp
A Content Security Policy enforced for the embedded resource. See HTMLIFrameElement.csp for details.
height
The height of the frame in CSS pixels. Default is 150.
importance
The download priority of the resource in the <iframe>'s src attribute. Allowed values:
auto (default)
No preference. The browser uses its own heuristics to decide the priority of the resource.
high
The resource should be downloaded before other lower-priority page resources.
low
The resource should be downloaded after other higher-priority page resources.
name
A targetable name for the embedded browsing context. This can be used in the target attribute of the <a>, <form>, or <base> elements; the formtarget attribute of the <input> or <button> elements; or the windowName parameter in the window.open() method.
referrerpolicy
Indicates which referrer to send when fetching the frame's resource:
  • no-referrer: The Referer header will not be sent.
  • no-referrer-when-downgrade (default): The Referer header will not be sent to origins without TLS (HTTPS).
  • origin: The sent referrer will be limited to the origin of the referring page: its scheme, host, and port.
  • origin-when-cross-origin: The referrer sent to other origins will be limited to the scheme, the host, and the port. Navigations on the same origin will still include the path.
  • same-origin: A referrer will be sent for same-site origins, but cross-origin requests will contain no referrer information.
  • strict-origin: Only send the origin of the document as the referrer when the protocol security level stays the same (HTTPS→HTTPS), but don't send it to a less secure destination (HTTPS→HTTP).
  • strict-origin-when-cross-origin: Send a full URL when performing a same-origin request, only send the origin when the protocol security level stays the same (HTTPS→HTTPS), and send no header to a less secure destination (HTTPS→HTTP).
  • unsafe-url: The referrer will include the origin and the path (but not the fragment, password, or username). This value is unsafe, because it leaks origins and paths from TLS-protected resources to insecure origins.
sandbox
Applies extra restrictions to the content in the frame. The value of the attribute can either be empty to apply all restrictions, or space-separated tokens to lift particular restrictions:
  • allow-forms: Allows the resource to submit forms. If this keyword is not used, form submission is blocked.
  • allow-modals: Lets the resource open modal windows.
  • allow-orientation-lock: Lets the resource lock the screen orientation.
  • allow-pointer-lock: Lets the resource use the Pointer Lock API.
  • allow-popups: Allows popups (such as window.open(), target="_blank", or showModalDialog()). If this keyword is not used, the popup will silently fail to open.
  • allow-popups-to-escape-sandbox: Lets the sandboxed document open new windows without those windows inheriting the sandboxing. For example, this can safely sandbox an advertisement without forcing the same restrictions upon the page the ad links to.
  • allow-presentation: Lets the resource start a presentation session.
  • allow-same-origin: If this token is not used, the resource is treated as being from a special origin that always fails the same-origin policy.
  • allow-scripts: Lets the resource run scripts (but not create popup windows).
  • allow-storage-access-by-user-activation : Lets the resource request access to the parent's storage capabilities with the Storage Access API.
  • allow-top-navigation: Lets the resource navigate the top-level browsing context (the one named _top).
  • allow-top-navigation-by-user-activation: Lets the resource navigate the top-level browsing context, but only if initiated by a user gesture.
Notes about sandboxing:
  • When the embedded document has the same origin as the embedding page, it is strongly discouraged to use both allow-scripts and allow-same-origin, as that lets the embedded document remove the sandbox attribute — making it no more secure than not using the sandbox attribute at all.
  • Sandboxing is useless if the attacker can display content outside a sandboxed iframe — such as if the viewer opens the frame in a new tab. Such content should be also served from a separate origin to limit potential damage.
  • The sandbox attribute is unsupported in Internet Explorer 9 and earlier.
src
The URL of the page to embed. Use "about:blank" to embed an empty page that conforms to the same-origin policy.
srcdoc
Inline HTML to embed, overriding the src attribute. If a browser does not support the srcdoc attribute, it will fall back to the URL in the src attribute.
width
The width of the frame in CSS pixels. Default is 300.

Deprecated attributes

These attributes are deprecated and may no longer be supported by all user agents. You should not use them in new content, and try to remove them from existing content.

align Deprecated since HTML4.01, Obsolete since HTML5
The alignment of this element with respect to the surrounding context.
frameborder Obsolete since HTML5
The value 1 (the default) draws a border around this frame. The value 0 removes the border around this frame, but you should instead use the CSS property border to control <iframe> borders.
longdesc Obsolete since HTML5
A URL of a long description of the frame's content. Due to widespread misuse, this is not helpful for non-visual browsers.
marginheight Obsolete since HTML5
The amount of space in pixels between the frame's content and its top and bottom borders.
marginwidth Obsolete since HTML5
The amount of space in pixels between the frame's content and its left and right borders.
scrolling Obsolete since HTML5
Indicatines when the browser should provide a scrollbar for the frame:
  • auto: Only when the frame's content is larger than its dimensions.
  • yes: Always show a scrollbar.
  • no: Never show a scrollbar.

Non-standard attributes

mozbrowser
See bug 1318532 for exposing this to WebExtensions in Firefox.
Makes the <iframe> act like a top-level browser window. See Browser API for details.
Available only to WebExtensions.

Scripting

Inline frames, like <frame> elements, are included in the window.frames pseudo-array.

With the DOM HTMLIFrameElement object, scripts can access the window object of the framed resource via the contentWindow property. The contentDocument property refers to the document inside the <iframe>, same as contentWindow.document.

From the inside of a frame, a script can get a reference to its parent window with window.parent.

Script access to a frame's content is subject to the same-origin policy. Scripts cannot access most properties in other window objects if the script was loaded from a different origin, including scripts inside a frame acessing the frame's parent. Cross-origin communication can be achieved using Window.postMessage().

Positioning and scaling

As a replaced element, the position, alignment, and scaling of the embedded document within the <iframe> element's box, can be adjusted with the object-position and object-fit properties.

Examples

A simple <iframe>

An <iframe> in action. After creating the frame, when the user clicks a button, its title is displayed in an alert.

HTML

<iframe src="https://mdn-samples.mozilla.org/snippets/html/iframe-simple-contents.html" title="iframe Example 1" width="400" height="300">
  <p>Your browser does not support iframes.</p>
</iframe>

Result

Open a link in an <iframe> in another tab

In this example, a Google map is displayed in a frame;

HTML

<iframe id="Example2"
    title="iframe Example 2"
    width="400" height="300"
    style="border:none"
    src="https://maps.google.com/maps?f=q&source=s_q&q=buenos+aires&sll=37.0625,-95.677068&sspn=38.638819,80.859375&t=h&hnear=Buenos+Aires,+Argentina&z=11&ll=-34.603723,-58.381593&output=embed">
</iframe>

Result

Accessibility concerns

People navigating with assistive technology such as a screen reader can use the title attribute on an iframe to label its content. The title's value should concisely describe the embedded content:

<iframe title="Wikipedia page for Avocados" src="https://en.wikipedia.org/wiki/Avocado"></iframe>

Without this title, they have to navigate into the iframe to determine what its embedded content is. This context shift can be confusing and time-consuming, especially for pages with multiple <iframe>s and/or if embeds contain interactive content like video or audio.

Specifications

Specification Status Comment
Referrer Policy
The definition of 'referrerpolicy attribute' in that specification.
Candidate Recommendation Added the referrerpolicy attribute.
HTML Living Standard
The definition of '<iframe>' in that specification.
Living Standard  
HTML5
The definition of '<iframe>' in that specification.
Recommendation  
HTML 4.01 Specification
The definition of '<iframe>' in that specification.
Recommendation  
Screen Orientation API Working Draft Adds allow-orientation-lock to the sandbox attribute.
Presentation API
The definition of 'allow-presentation' in that specification.
Candidate Recommendation Adds allow-presentation to the sandbox attribute

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support 1Edge Full support YesFirefox Full support Yes
Notes
Full support Yes
Notes
Notes The resize CSS property doesn't have any effect on this element due to bug 680823.
IE Full support YesOpera Full support YesSafari Full support Yes
Notes
Full support Yes
Notes
Notes Safari has a bug that prevents iframes from loading if the iframe element was hidden when added to the page. iframeElement.src = iframeElement.src should cause it to load the iframe.
WebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support Yes
Notes
Full support Yes
Notes
Notes The resize CSS property doesn't have any effect on this element due to bug 680823.
Opera Android Full support YesSafari iOS Full support Yes
Notes
Full support Yes
Notes
Notes Safari has a bug that prevents iframes from loading if the iframe element was hidden when added to the page. iframeElement.src = iframeElement.src should cause it to load the iframe.
Samsung Internet Android Full support Yes
align
Deprecated
Chrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
allow
Experimental
Chrome Full support 60Edge No support NoFirefox No support NoIE No support NoOpera Full support 47Safari Full support 11.1WebView Android Full support 60Chrome Android Full support 60Edge Mobile No support NoFirefox Android No support NoOpera Android Full support 47Safari iOS No support NoSamsung Internet Android No support No
allowfullscreenChrome Full support 27
Full support 27
Full support 17
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge Full support YesFirefox Full support 18
Full support 18
Full support 9
Prefixed
Prefixed Implemented with the vendor prefix: moz
IE Full support 11
Prefixed
Full support 11
Prefixed
Prefixed Implemented with the vendor prefix: ms
Opera Full support YesSafari Full support 7
Full support 7
Full support Yes
Prefixed
Prefixed Implemented with the vendor prefix: webkit
WebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android Full support 18
Full support 18
Full support 9
Prefixed
Prefixed Implemented with the vendor prefix: moz
Opera Android No support NoSafari iOS Full support 7
Full support 7
Full support Yes
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Samsung Internet Android ?
allowpaymentrequest
Experimental
Chrome No support NoEdge No support NoFirefox No support NoIE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile No support NoFirefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support No
frameborder
Deprecated
Chrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
heightChrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
longdesc
Deprecated
Chrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
marginheight
Deprecated
Chrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
marginwidthChrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
nameChrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
referrerpolicyChrome Full support 51Edge No support NoFirefox Full support 50IE No support NoOpera Full support 38Safari Full support 11.1WebView Android Full support 51Chrome Android Full support 51Edge Mobile No support NoFirefox Android Full support 50Opera Android Full support 38Safari iOS No support NoSamsung Internet Android Full support 7.2
scrolling
Deprecated
Chrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
sandboxChrome Full support 4Edge Full support YesFirefox Full support 17IE Full support 10Opera Full support 15Safari Full support 5WebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 17Opera Android ? Safari iOS Full support 4.2Samsung Internet Android Full support Yes
sandbox="allow-popups"Chrome Full support YesEdge Full support YesFirefox Full support 28IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile No support NoFirefox Android Full support 27Opera Android ? Safari iOS ? Samsung Internet Android ?
sandbox="allow-popups-to-escape-sandbox"Chrome Full support 46Edge No support NoFirefox Full support 49IE No support NoOpera Full support 32Safari ? WebView Android Full support 46Chrome Android Full support 46Edge Mobile No support NoFirefox Android Full support 49Opera Android Full support 32Safari iOS ? Samsung Internet Android Full support 5.0
sandbox="allow-modals"Chrome ? Edge No support NoFirefox Full support 49IE No support NoOpera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile No support NoFirefox Android Full support 49Opera Android ? Safari iOS ? Samsung Internet Android ?
sandbox="allow-presentation"Chrome Full support 53Edge No support NoFirefox Full support 50IE No support NoOpera Full support 40Safari ? WebView Android No support NoChrome Android Full support 53Edge Mobile No support NoFirefox Android Full support 50Opera Android Full support 40Safari iOS ? Samsung Internet Android Full support 6.0
sandbox="allow-storage-access-by-user-activation"
ExperimentalNon-standard
Chrome No support NoEdge No support NoFirefox Full support 65
Disabled
Full support 65
Disabled
Disabled From version 65: this feature is behind the dom.storage_access.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE No support NoOpera No support NoSafari Full support 11.1
Notes
Full support 11.1
Notes
Notes Currently only available on macOS High Sierra 10.13.4 beta, and in Safari Technology Preview 47+.
WebView Android No support NoChrome Android No support NoEdge Mobile No support NoFirefox Android Full support 65
Disabled
Full support 65
Disabled
Disabled From version 65: this feature is behind the dom.storage_access.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Opera Android No support NoSafari iOS Full support 11.1
Notes
Full support 11.1
Notes
Notes Currently only available on iOS 11.3 beta.
Samsung Internet Android ?
sandbox="allow-top-navigation-by-user-activation"Chrome Full support 58Edge No support NoFirefox No support NoIE No support NoOpera Full support 45Safari ? WebView Android Full support 58Chrome Android Full support 58Edge Mobile No support NoFirefox Android No support NoOpera Android Full support 45Safari iOS ? Samsung Internet Android Full support 7.0
srcChrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
srcdocChrome Full support 20Edge No support NoFirefox Full support 25IE No support NoOpera Full support 15Safari Full support 6WebView Android ? Chrome Android ? Edge Mobile No support NoFirefox Android Full support 25Opera Android ? Safari iOS ? Samsung Internet Android ?
widthChrome Full support 1Edge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
mozbrowser
Non-standard
Chrome No support NoEdge No support NoFirefox No support No
Notes
No support No
Notes
Notes See bug 1318532
Notes Available only to WebExtensions.
IE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile No support NoFirefox Android No support No
Notes
No support No
Notes
Notes See bug 1318532
Notes Available only to WebExtensions.
Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.