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Google Chrome Frame


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Google Chrome Frame

Internet Explorer 6 using Google Chrome Frame to render Wikipedia’s main page

Internet Explorer 6 using Google Chrome Frame to render Wikipedia’s main page

Developer(s) Google Inc.
Initial release September 22, 2009 (2009-09-22)
Last release 32.0.1700.107 (February 1, 2014; 4 years ago (2014-02-01)) [±]
Preview release 31.0.1650.48 (November 6, 2013; 5 years ago (2013-11-06)) [±]

Development status Discontinued
Operating system Microsoft Windows
Type Replacement layout engine
Website www.chromium.org/developers/how-tos/chrome-frame-getting-started

Google Chrome Frame is a plug-in designed for Internet Explorer based on the open-source Chromium project. It went stable in September 2010, on the first birthday of the project.[1] It was discontinued in February 2014 and is no longer supported.[2]


The plug-in works with Internet Explorer 6, 7, 8 and 9.[2] It allows suitably coded web pages to be displayed in Internet Explorer by Google Chrome’s versions of the WebKit layout engine and V8 JavaScript engine. In a test by ComputerWorld, JavaScript code ran 10 times faster with the plug-in on Internet Explorer 8.[3]


Development of Google Chrome Frame was required in order for Google Wave (now Apache Wave), which requires HTML5, to function in Internet Explorer.


The first stable version supporting Non-Admin Chrome Frame was rolled out on August 30, 2011. The newer Chrome Frame installer ran at Admin level by default and fell back to Non-Admin mode if the user didn't have the necessary permissions on their machine.[4]



Deployment[edit]


Web developers can allow their websites to use the plug-in by using the following code on their web pages:


<meta http-equiv="X-UA-Compatible" content="chrome=1" />

This will cause the page to render in Chrome Frame for users who have it installed, without changing it for users who have not.


In February 2010, Google Chrome Frame was updated to also support deployment by HTTP headers, with a number of advantages, such as simplified sitewide support and support of the application/xhtml+xml MIME type even on Internet Explorer which normally does not support this MIME type for XHTML documents.[5] For a blanket rollout on an entire web site, an Apache server with mod_headers and mod_setenvif enabled can specify a header directive like this:


<IfModule mod_setenvif.c>

    <IfModule mod_headers.c>

        BrowserMatch chromeframe gcf

        Header append X-UA-Compatible "chrome=1" env=gcf

    </IfModule>

</IfModule>

Internet Explorer add-ons do not function on pages rendered using WebKit. There has been criticism concerning Chrome Frame from Mozilla[6] and Microsoft[7] as Chrome Frame "can disable IE features and muddle users' understanding of Web security matters". With Google Chrome Frame installed, users can add the gcf: prefix to URLs to render them with WebKit and V8 instead of Internet Explorer's built-in Trident engine after enabling this feature via a registry setting. An update also brought the possibility to navigate pages in IE utilising WebKit/V8 without the gcf: prefix:[8]

















Registry key Value Function
HKCUSoftwareGoogleChromeFrame AllowUnsafeURLs=1 (DWORD) By adding the gcf: prefix to the URL in address bar, the page will load rendered with WebKit/V8
IsDefaultRenderer=1 (DWORD) Makes WebKit/V8 the default rendering technique

Google Chrome Frame communicates with Google's servers: it reports installation to Google, downloads updates to Chrome Frame and Google's Safe Browsing list, and at the user's discretion can send Google usage statistics and crash reports.[9]



References[edit]





  1. ^ Chromium Blog: Google Chrome Frame: Stable and Speedy


  2. ^ ab "Google Chrome Frame"..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  3. ^ Amy Willis (2009-09-25). "IE8 browser runs faster with Google Chrome plug-in". The Daily Telegraph.


  4. ^ Chromium Blog: Non-Admin Chrome Frame Reaches Stable Channel


  5. ^ Russell, Alex (2010-02-09). "Google Chrome Frame Developer Updates". Google. Retrieved 2010-02-15.


  6. ^ Shankland, Stephen (2009-09-29). "Mozilla VP: Chrome Frame is the wrong answer". CNet. Retrieved 2010-02-02.


  7. ^ "Microsoft bashes Google's Chrome-in-IE plan".


  8. ^ "Chrome Frame: Developer Guide - The Chromium Projects". Retrieved 2010-09-16.


  9. ^ "Google Chrome Frame Privacy Notice".




External links[edit]



  • Google Chrome Frame home page

  • Chrome Frame announcement

  • Mozilla slams Google’s Chrome Frame as ‘browser soup’












Retrieved from "https://en.wikipedia.org/w/index.php?title=Google_Chrome_Frame&oldid=874728748"





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