strict-origin-when-cross-origin (default) 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). same-originĪ referrer will be sent for same origin, but cross-origin requests will contain no referrer information. Navigations on the same origin will still include the path. The referrer sent to other origins will be limited to the scheme, the host, and the port. The sent referrer will be limited to the origin of the referring page: its scheme, host, and port. The Referer header will not be sent to origins without TLS ( HTTPS).

Indicates which referrer to send when fetching the frame's resource: no-referrer This can be used in the target attribute of the, , or elements the formtarget attribute of the or elements or the windowName parameter in the window.open() method. Note: Loading is only deferred when JavaScript is enabled.Ī targetable name for the embedded browsing context. This improves the performance and cost in most typical use cases, in particular by reducing initial page load times. The intent is to avoid using the network and storage bandwidth required to fetch the frame until the browser is reasonably certain that it will be needed. lazyĭefer loading of the iframe until it reaches a calculated distance from the visual viewport, as defined by the browser. Load the iframe immediately on page load (this is the default value). Indicates when the browser should load the iframe: eager csp ExperimentalĪ Content Security Policy enforced for the embedded resource. See IFrame credentialless for more details. In return, the Cross-Origin-Embedder-Policy (COEP) embedding rules can be lifted, so documents with COEP set can embed third-party documents that do not. It uses a new context local to the top-level document lifetime. It doesn't have access to the network, cookies, and storage data associated with its origin.

Set to true to make the credentialless, meaning that its content will be loaded in a new, ephemeral context. Note: This attribute is considered a legacy attribute and redefined as allow='payment'.

Allowing cross-origin use of images and canvas.

HTML table advanced features and accessibility.

From object to iframe - other embedding technologies.

Assessment: Structuring a page of content.

Iframe html code