SEO and the IFRAME

The other day, I ran into a law firm with a website coded using the IFRAME element. While there is nothing programmatically wrong with IFRAMEs, they present some significant challenges for search engine optimization.

Here is a definition for “IFRAME” from Wikipedia:

“IFRAME (from inline frame) is an HTML element which makes it possible to embed another HTML document inside the main document… IFrames are more commonly used to insert content (for instance an advertisement) from another website into the current page.”

A few examples of sites using an IFRAME are:
http://www.samisite.com/iframephotos/index.htm,
http://calcium.brownbearsw.com/demos/miniframe.html &
http://www.webmonkey.com/webmonkey/96/37/stuff/iframe_ex.html

From a search engine optimization point of view, the use of the IFRAME is problematic for several reasons. First, whenever a search engine spiders the content that’s within an IFRAME, the search engine will normally link to the IFRAMED page itself instead of the “master” page it is housed within. Often, this means searchers are delivered to a page without site navigation. This is not optimal for keeping the attention of search engine spiders or visitors. A good example of a page like this within Google’s index:
http://www.paxilbirthdefect.com/source/about/prenatal_exposure.html.

Next, if you’re using an IFRAME to display another website’s content within your overall navigation structure, you’re now subject to showing whatever that site may change their content to say. Today’s IFRAMED page about birth control may be tomorrow’s IFRAMED page about a less savory topic. Of course, search engines will recognize you’re serving another site’s content so it will have no positive impact on your site’s rankings.

Additionally, some users turn off the IFRAME element in their browser’s advanced settings because of a the security hole it presents (trusted websites can unwittingly serve malicious content via IFRAMES).

Finally, and this is the most important point, I’ve spotted some sites that have multiple IFRAME “shells” on different URLs that all serve the same framed-in content. In the eyes of the search engines, this is duplicate content and is likely to be reason for de-listing.

If you can’t tell, I don’t recommend using IFRAME in your site’s code. Just like framesets, there was a time for them, but that was years ago. Duplicate content, end-user experience and security concerns are factors I consider to be argument enough.

[tags]IFRAME, inline frames[/tags]

Written by jclayc on May 7th, 2007 with 6 comments.
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