<iframe>: el elemento Inline Frame

Cada elemento <iframe> tiene su propio historial de sesión y su propio objeto Documento. El contexto de navegación que incluye el contenido implícito se llama contexto de navegación principal. El contexto de navegación de nivel superior (que no tiene padre) es típicamente la ventana del navegador, representado por el objeto Window.

Este elemento admite atributos globales.

• En el atributo target de los elementos <a>, <form> y <base>.
• En el atributo formtarget de los elementos <input> y <button>
• En el parámetro windowName en el método window.open().

allow

Especifíca una política de características para el <iframe>. Vea el articulo Privacy, permissions, and information security para detalles en temas de seguridad y como <iframe> funciona con las Politicas de Herramientas para mantener los sistemas seguros.

allowfullscreen

Definido como true si el <iframe> puede activar el modo a pantalla completa llamando al método requestFullscreen().

Nota: Se considera un atributo heredado y se redefine como allow="fullscreen".

allowpaymentrequest

Definido como true si se debe permitir que un <iframe> de origen cruzado pueda invocar el API de solicitud de pago. <

Nota: Se considera un atributo heredado y se redefine como allow="payment".

csp Experimental

Una Politica de Seguridad del Contenido aplicada para el recurso incrustado. Vea HTMLIFrameElement.csp para detalles.

height

Indica la altura del frame en HTML5 en píxeles CSS, o en HTML4.01 en píxeles o como un porcentaje.

importance Experimental

La prioridad de descarga en el recurso para el atributo src del <iframe>. Valores permitidos:

• auto: (default) Sin preferencia. El buscador utiliza sus propias heurísticas para decidir la prioridad del recurso.
• high: El recurso debe ser descargado antes que otros recursos de baja-prioridad de los recursos de la página.
• low: El recurso debe ser descargado después de otros recursos de alta-prioridad de los recursos de la página.

name

Nombre objetivo para el contexto de navegación incrustado. Se puede utilizar:

• En el atributo target de los elementos <a>, <form> y <base>.
• En el atributo formtarget de los elementos <input> y <button>
• En el parámetro windowName en el método window.open().

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 origin, 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 Experimental : 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.

Nota:

• 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.

seamless

This Boolean attribute indicates that the browser should render the inline frame in a way that makes it appear to be part of the containing document, for example by applying CSS styles that apply to the <iframe> to the contained document before styles specified in that document, and by opening links in the contained documents in the parent browsing context (unless another setting prevents this).

src

The URL of the page to embed.

srcdoc

The content of the page that the embedded context is to contain.

width

Indicates the width of the frame in HTML5 in CSS pixels, or in HTML4.01 in pixels or as a percentage.

Estos atributos están obsoletos y es posible que ya no sean compatibles con todos los agentes de usuario. No debe utilizarlos en contenido nuevo y tratar de eliminarlos del contenido existente.

align Obsoleto

La alineación de este elemento con respecto al contexto que lo rodea.

frameborder Obsoleto

El valor 1 (por defecto) indica al navegador establecer una frontera entre este marco y todo otro marco. El valor 0 indica que el navegador no establece una frontera entre este marco y otros marcos.

longdesc Obsoleto

Una URI de una descripción larga del marco. Debido al mal uso generalizado, esto no es útil para navegadores no visuales.

marginheight Obsoleto

La cantidad de espacio en píxeles entre el contenido del marco y sus márgenes superior e inferior.

marginwidth Obsoleto

La cantidad de espacio en píxeles entre el contenido del marco y sus márgenes izquierdo y derecho.

scrolling Obsoleto

Indica cuándo el navegador debe proporcionar una barra de desplazamiento para el marco:

• auto: Sólo cuando el contenido del marco es mayor que sus dimensiones.
• yes: Muestra siempre una barra de desplazamiento.
• no: No muestr la barra de desplazamiento nunca.

mozbrowser Non-standard

Nota: See Error 1318532 en Firefox 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.

mozallowfullscreen Non-standard

In Gecko 9.0 or later, this attribute can be set to true if the frame is allowed to be placed into full screen mode by calling its element.mozRequestFullScreen() method. If this isn't set, the element can't be placed into full screen mode.

webkitallowfullscreen Non-standard

In Chrome 17 or later (and maybe earlier), this attribute can be set to true if the frame is allowed to be placed into full screen mode by calling its element.webkitRequestFullScreen() method. If this isn't set, the element can't be placed into full screen mode.

mozapp Non-standard

For frames hosting an open web app, this specifies the URL of the app manifest. This ensures that the app is loaded with the right permissions. See Using the Browser API for details. Available in Gecko 13.0 and later.

remote Non-standard

Load the frame's page in a separate content process.

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 accessing the frame's parent. Cross-origin communication can be achieved using Window.postMessage().

Un <iframe> en acción. Después de crear el marco, cuando el usuario hace clic en un botón, su título se muestra en una alerta.

HTML

<iframe
  src="https://example.org"
  title="iframe Example 1"
  width="400"
  height="300">
  <p>Your browser does not support iframes.</p>
</iframe>

Resultado

En este ejemplo, se muestra un mapa de Google en un marco.

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>

Resultado