Iframe

What Is an Iframe?

Iframes are a common source of errors in an SEO context: Google often does not attribute the embedded content to your page, which means that this content remains worthless for your rankings. At the same time, iframes burden page load time because they trigger separate server requests. For videos and maps, iframes are acceptable, but your main content should always be embedded directly in HTML to ensure full indexability.

An iframe (inline frame) is an HTML element that embeds a foreign web page or foreign content into your own website — similar to a window within a window. Technically, the visitor sees embedded content, but the iframe loads data from an external server. In the SEO context, iframes are problematic because Google often does not correctly attribute or index the embedded content.

The mechanism works as follows: Google does crawl iframes, but often cannot clearly determine whether the content is part of the main page or a standalone page. The embedded content is not evaluated as strongly as content in the main HTML. If a company embeds reviews from a third-party platform via iframe, Google recognizes this less easily as content of the page itself. Iframes also affect performance: they load separate resources, which can slow down page load time. An alternative is using async iframes or lazy loading.

In practice, the use of iframes should be minimized when the embedded content is part of the SEO strategy. If iframes are unavoidable (e.g. for widgets, videos, maps), the title, alt text, and surrounding context should be clear. Main content should always be in the main HTML, not in iframes. For external maps or YouTube videos, iframe embedding is acceptable — Google recognizes these content types. For user-generated content or reviews, however, it is worth considering whether these should be included directly in HTML to make them fully indexable.