If multiple options are provided the highest one for the active browser will be used. These can be used individually or together. This tells the browser which version of IE you wish your site to be rendered in. “chrome=1” – The browser will use chrome frame if it is installed and will override any of the settings above ( now discontinued).IIS 7 Custom Header Ī complete list of custom headers has been posted on stack overflow. The possible values that can be used as the value/content are listed below. If you place any other tags such as or before the meta tag it will not recognize your tag and revert to the default behavior. The meta tag has to be placed in the head tag, and can only be preceded by the title. Using any of the below options will hide the compatibility view icon from the user and handle the page as dictated. We can control how IE Compatibility View will behave through the use of a meta tag or custom header. The only way to tackle this issue is to be in control of how your site behaves. This is a burden on development, testing and to be frank is just completely over the top. So as developers we want to support as many browsers as possible, with Compatibility View available on your site the number of IE versions has increased by 3. The differences are significant, impacting areas such as CSS rendering, processing of JavaScript functions and properties, and many many more! This behavior has not changed with the subsequent release of IE 9 and 10. At the release of IE 8 in 2009 a blog post was published on the IE Blog detailing how IE 8 compatibility view was different from native IE 7. If you want to know more the IE Support Team wrote a blog about the list and on the support site there is a description of how it is compiled.Īs stated previously Compatibility View handles websites as if opened in a older browser, but it will not behave exactly the same as the native browser.
IE 11 COMPATIBILITY VIEW ON OR OFF DOWNLOAD
But what does ‘Download updated compatibility lists from Microsoft’ exactly mean? After some research I discovered Microsoft collates a list of high volume sites where users turn on Compatibility View, and this option will download that list and enable Compatibility View automatically when using these sites. The default setting has Compatibility View enabled for all intranet sites only, with a setting to enable it for all sites. It is worth noting that the site is added based on the domain name, excluding any sub domain or URL path, meaning that any site hosted on that domain will be displayed in Compatibility View until removed from this list. The site will be added to the Compatibility List accessed through the tools menu of each browser. Sets the right internal parameters to process conditional comments as IE 7 would.Use IE 7 Standards mode for standards mode document.When the browser attempts to emulate IE 7 it will: When the default Compatibility View is enabled manually in either IE 8, 9 or 10 by clicking the icon on the address bar, the browser will attempt to behave as if you were in IE 7. This post will aim to remove all of these uncertainties regarding IE’s Compatibility View and detail how as developers we can control this behaviour using the ‘X-UA-Compatible’ meta tag or header. What older browsers? Why would new versions of IE not be backwards compatible? If I use this am I going to loose any functionality the new browser offers? Will it look and act exactly the same as when viewed in a native browser it is trying to emulate? Why does this not appear on all websites? This has now been hidden in IE 11 (preview) but the functionality still exists through the menu tools.įor me this is where the questions/problems start. It appears in the top right of IE 8, 9 and 10, stating that it will make websites designed for older browsers look better. Since Internet Explorer (IE) 8 Microsoft have supported a ‘Compatibility View’, allowing users to view web pages as if they are using a lower version of IE, normally IE 7.
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