You may be facing what seems like a small layout issue with your iframe tag today. Create pages that Google can crawl and associate with your site easily. If you do include iFrames, make sure to provide additional text-based links to the content they display, so that Googlebot can crawl and index this content. We recommend that you avoid the use of iFrames to display content. Content displayed via iFrames may not be indexed and available to appear in Google’s search results. IFrames are sometimes used to display content on web pages. Google recommends refraining from creating iframes.Īt there Webmasters Help Forum, Google clearly stated that iframes may cause problems for them : Every in a page requires increased memory and other computing resources.įind better ways to refer your visitors to external content instead of placing it within the iframe tag.Navigation of the site in the iframe stops working.Content within the iframe is missing since the source URL changed.Content within the iframe doesn’t fit in and looks odd.It confuses users, suddenly opening the iframe content in a new browser window.
It confuses visually impaired visitors, using screen readers.It tends to break the browsers’ “Back” button.The iframe tag is notorious for creating usability annoyances. A malicious user can hijack your users’ keystrokes.ĭon’t put your visitors at risk to the XSS attacks.A malicious user can hijack your users’ clicks.A malicious user can change the source site URL.You may get a submittable malicious web form, phishing your users’ personal data.If you create an iframe, your site becomes vulnerable to cross-site attacks. In this blog post, you will learn the three main reasons why you might not want to use the iframe. It often creates more problems rather than solving them.īreaking design is not the only issue with this tag. They right away bumped into a layout issue. The course of action that you select will depend greatly on how much of a priority this issue is to you.One of our customers implemented an iframe on their website. There are a number of ways to set scrollbar options on an iFrame, from simple to complex. Window.attachEvent("onmessage", resizeIFrame) Window.addEventListener("message", resizeIFrame, false) Var myIFrame = document.getElementById('myIFrame') If (event.origin != loc.protocol + '//' + loc.host) return The iFrame’s dimensions are reset according the the event data’s w and h properties – that’s the first argument passed to the postMessage() function above: Inside the function, the first line verifies the sender’s identity using the origin property in order to thwart cross-site scripting attacks. In the parent document, we need to attach an event handler to the postMessage event that accepts an event as its argument. This is child2this is child2this is child2this is child2this is child2this is child2this is child2this is child2this is child2this is child2 If you want it the other way around, you have to apply the rules dynamically via scripting, for instance: function setIframeSize(iframe), loc.protocol + '//' + loc.host)
#Iframe no border how to#
In essence, the child document is telling the parent how to display it. Instead, you have to apply the CSS values to the child document’s or tag. However in practice, this doesn’t have any effect. It would seem evident that if you wanted to show a vertical scrollbar and suppress the horizontal one you would apply a style of “overflow-y:scroll overflow-x:hidden” to the element. It replaced the “yes” and “no” values with “scroll” and “hidden” (“auto” remained), while offering additional values of “visible”, “initial”, and “inherit”. It could be set to “auto”, which means that scrollbars appear if needed (the default behavior), “yes” (scrollbars are always shown, whether needed or not), and “no” (scrolbars are never shown, even when needed).Īlthough still supported in all major browsers, the scrolling attribute has largely been eclipsed by the CSS overflow, overflow-x, and overflow-y CSS properties. Originally, iFrame scrollbars were set using the scrolling attribute. Provided you’ve got access to the iFrame content, you can pull it off. A great idea in theory, but the devil’s in the implementation details here. Sometimes the solution is to set the dimensions of the iFrame to that of the containing document so that scrollbars are not needed. There are ways of overriding this behavior, but not without the risk of having scrolbars when not needed, or worse, no scrollbars when required. Display iFrame Contents without ScrollbarsĬontent that is presented in an iFrame appears with a vertical scrollbar if the length of the child document exceeds the height of the iFrame and with a horizontal scrollbar if the child document elements won’t wrap to the width of the iFrame.
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