modern.IE – A new set of tools to help test web site compatibility

Yesterday, we launched modern.IE, a new set of tools and resources to help developers test their sites for the over 50% of users who run various versions of Internet Explorer. modern.IE includes a wizard that scans a Web page URL for common interoperability problems and suggests some ideas for how to address those issues to improve the user experience across modern and older browsers. The site also offers 3 months of free cross-browser testing, through a partnership with BrowserStack. modern.IE provides new Chrome/Firefox add-ins and offline virtual machine images to help developers test their site regardless of what browser or platform they prefer to use. The modern.IE site, which we will update regularly, is another step forward in helping developers achieve the goal of interoperability through same markup. Through these efforts, we want developers to be able to spend more time innovating on the Web and less time testing.

Scan for common coding problems (BETA)

Let’s start with the wizard. Our goal is to help developers spend less time testing for IE, and to help the community progress towards using same markup across browsers and platforms. The BETA version of the tool detects 10 common site coding problems that we knew we could help with. These fall into three main groups – issues caused by supporting older and modern versions of IE, problems supporting multiple platforms and browsers, and a few things that developers can start considering when it comes to delivering the best experience on Windows 8.

The wizard, which is based on a scanner that we have used within Microsoft for some time, is a BETA and we plan to enhance it regularly over the coming months, based on community input. For example, modern.IE now performs a static scan of the code on a Web site. While this has numerous performance benefits, it can yield incomplete results if a developer is using conditional code or browser detection. We welcome your ideas on how we can make testing your site in IE easier.

Group 1: Fix common problems from supporting old and modern versions of IE:

  • Known compatibility issues – With every release of IE, we test top traffic and influential sites for compatibility problems that prevent the site from rendering in the latest versions of IE. We typically reach out to these developers and work with them to help fix compatibility issues at no charge. With this wizard, developers can now access compatibility data more easily, contact us when they need help, and reduce the time needed to search through docs on MSDN for fix recommendations.
  • Compatibility Mode – The Compatibility View list indicates when code created for older versions of IE is causing compatibility problems with modern versions of IE (like IE9 and IE10). Developers are not always aware where, when, and why their site is listed. This test eliminates the guesswork by confirming whether a site on the list; if so, it suggests using Compat Inspector – an automated JS tool for detecting and removing old markup, so that the site will be compatible with modern versions of IE.
  • Frameworks and libraries – Like browsers, older versions of these Web “building blocks” can cause compatibility problems. This test looks for jQuery, jQuery UI, jQuery Form, SWFObject, MooTools, Modernizr, and Prototype.js which make up the majority of common library compatibility problems we observe on top sites. Many frameworks and libraries have more recently switched to an auto-update model that is similar to what modern browsers, including Internet Explorer, now use.
  • Web standards docmode – This test searches for DocType markup code that tells the browser to expect modern Web standards like HTML5 and CSS3. Older docmodes force all versions of IE to render like IE8, which can impact site performance and make it more difficult for developers to write code that works in all modern browsers.

Group 2: Help your site work well on many browsers and devices:

  • CSS-prefixes – This test detects when CSS code should test for vendor-specific prefixes (-moz, -ms, -o, and –webkit) that could improve you code’s compatibility. Across browsers. There are specific best practices that developers can follow to avoid prefixing problems, especially in mobile platforms.
  • Browser plug-ins – With IE10, we outlined our vision for a plug-in free Web. However, we also recognize that this is an emerging practice and developers must provide their best experience to the user. This test determines whether a site requires plug-ins that might not be available on mobile (like on Surface or an iPad). If a plug-in is detected, the tool will suggest how to learn more about building plug-in free sites. If the site relies on Adobe Flash, the tool will explain how to add your site to the Flash CV list
  • Responsive Web design – An emerging best practice, this test detects whether a site is using media queries, a technology that is commonly used to detect large- and small- screen device browsing and “responsively” change the site experience to look its best on your screen. There are many ways to implement responsively designed sites so this test is primarily designed to build awareness of what’s possible on the modern Web.
  • Browser detection – The wizard also detects coding patterns (like navigator.useragent or $.browser) that might infer browser detection. For this release of the tool, we take a conservative approach to detection by filtering out results from scripts that are reference a domain other than the Web page (like a 3rd party analytics software). We suggest when to use feature detection instead of browser detection when supporting many browsers and platforms. Though it is not required for all sites, feature detection can make it easier to support a site without the need to manually retest each new browser version.

Group 3: Consider building with some new features in Windows 8:

  • Touch-browsing – This test suggests setting the default behavior when a user visits your site in a touch-enabled browser. This tells the browser what to expect when a user does common touch gestures like pinch and zoom or double-tap.
  • Start Screen Site tile – Finally the wizard suggests a new way developers can put their site logo onto a Windows 8 Start Screen tile. Users can “pin” their favorite site and place it right next to their Windows Store apps.

Virtual options for testing Internet Explorer

Although modern versions of Internet Explorer are automatically updated, the reality is that many users still use an older version of IE like IE8, IE7, and IE6. There are several options for setting up a test matrix including maintaining PCs with old versions of Windows and IE or managing a suite of virtualization images like the ones we have made available on the Microsoft Download Center. On modern.IE, we provide two options to help make browser testing easier, even if you are developing on another browser or another OS platform.

Hosted virtualization

Cloud-based or “hosted” virtualization services take away some of the pain associated with managing old PCs or a suite of test images. With solutions like BrowserStack, you can perform visual testing of your site directly from your browser. If your test site is not publicly accessible via IP address or DNS lookup, you can take advantage of BrowserStack’s local server testing using Java based secure tunneling. We have also made available add-ins for both Chrome and Firefox to make testing on IE from within those browsers even easier.

As an example, here’s what the IE Blog looks like in IE7 on Windows XP:

Compatibility testing Internet Explorer with BrowserStack

The three month offer available through modern.IE includes BrowserStack’s Windows-based services, including most versions of IE, Firefox, Safari, Chrome and Opera. The offer is good for a three month period once you sign up for the service on modern.IE. You can choose when to activate your three month period anytime over the next year.

Local virtualization

We have also updated our test virtual machine images to include IE and Windows OS versions from IE6 through IE10. We provide images for the following virtualization platforms:

  • Hyper-V on Windows Server 2008 R2
  • Hyper-V on Windows Server 2012
  • Virtual PC
  • Parallels for Windows and Mac
  • VirtualBox for Windows, Mac, and Linux
  • VMWare Fusion for Mac
  • VMWare Player for Windows

These are just the first of many updates we’ll be providing on modern.IE. We’re very interested in your feedback on the resource so far – let us know what you like, and what we’re missing!

— Sandeep Singhal, Group Program Manager, Internet Explorer

Comments (36)
  1. Great resource — if it's updated as promised, I think it will make a big difference over the next few years!

  2. James Wyse says:

    Very cool, this will be a great help!

    One question: What's the deal with activation? I'm using the Vista/IE7 image in Virtualbox for Mac, however it tells me that the copy is not genuine and keeps asking to activate, however activation doesn't work as it complains of a missing KMS server. Can I safely ignore this?

  3. Martijn says:

    First of all, touchscreen browsing has been around for a couple of years. Get with the program, Microsoft. Just do whatever the other two big ones do and you'll be fine without any browser-specific "optimizations" (this can also read as "HTML bloating")

    Secondly, home screen tile pictures can be taken from apple-touch-icon metatags. I won't include another bloating metatag just because MS is too much of a hardass to use what already exists.

    Other optimizations: been there, done that. Dozens of tools out there, notable FireBug+YSlow which can also test sites that aren't public.

  4. James Wyse says:

    "Secondly, home screen tile pictures can be taken from apple-touch-icon metatags. I won't include another bloating metatag just because MS is too much of a hardass to use what already exists."

    Martijn: It doesn't really make sense to use 'apple-touch-icon' tags, does it? You can't really bash them for that, it would just create even more confusion.

    Though I agree a standard tag where we can specify a vector image for use in touch icons, tile images, etc would be a good idea.

  5. Eduardo Valencia says:

    Please add the option for larger icons in Internet Explorer 10!,Thanks!

  6. @blog says:

    The site shows this blog using an outdated version of jquery.

    Please fix asap

  7. aaaa says:

    It turns Windows 7 and is waiting IE10.

    A bug is corrected and released exactly.

    It is pleasure.

  8. James says:

    Yay! I LOVE IE7 testing! My valuable time well spent!

  9. wut says:

    modern.IE? That's an oxymoron!

  10. Dave says:

    Thanks for providing the VMs in Virtual box format.

  11. Vincenzo Di Russo [MVP] says:

    Great resource. Thanks!

  12. JWP says:

    Thanks for this great resource.

    @IE-Team, would you guys please push "FREQUENT" updates for IE-10 (for both modern and desktop flavors), to convince people that you are really committed to improve IE… rather pushing them yearly?

    For me IE auto-update is just an eye-wash unless you guys push — non-security — FEATURE updates once each month. Your strategy of creating a hype, holding back and then spinning excuses has failed on many products. Its time to offer something real.

  13. Arieta says:

    Will IE10 Windows 7 RTM improve on the memory leak problems that the pre-release has? It seems that IE does not unload parts of the site that has been closed, and once the browser reaches 1gb size in RAM, it implodes on itself: first, pages will start missing stuff in them, and then the entire thing crashes. There have been reports of this happening in IE10 Win8 too, though…

    Pretty major issue, and I don't see it mentioned much…

  14. Randall says:

    I know I'm gonna be politely chided for not following the correct corporate channels in reporting this, but all the same: it turns out Google Reader's "subscribe" button looks only at the *first* RSS alternate link tag in the page source when you provide it a URL, and on this site that points to the feed for the site home, not this blog. So when I wanted to resubscribe to the blog, I couldn't actually do it by entering the blog URL.

  15. @Arieta says:

    You have a particular site in mind on which that happens?

  16. Almost trustable says:

    Everything was going great with this article until you pointed out that the site was endorsing the addition of IE-only code.

    This is the exact same sh__! That caused a decade long browser was that developers walked out of with a hatred for Internet Explorer!

    Have you seriously not learned your lesson?

    As YOU stated on your site developers should strive to make their sites run using STANDARDS based markup that runs/renders in all browsers.

    Shame on you for trying to insert your own propaganda into something that might otherwise be treated as a useful resource.

    Now rather than add crap like this to your site tool.. How about taking 5min and fix the blog comment system!!!!!!

    I know that my first (and maybe 2nd) attempt to post WILL FAIL FOR SURE on the IE Blog so I have to know in advance and save a copy of it before posting!

    How utterly ridiculous is that for a blog?!?!?!?!

    You've known about this bug for at least 4 years!! So please don't post another article of any kind until you've fixed this – SERIOUSLY!!!!

  17. Petr says:

    IE team should release IE10 for Windows 7 instead of vasting it's time with modern.IE

  18. Stuart says:

    What about the memory leak problems that I have heard about (> 5/6 tabs open, 1 GB RAM usage, IE10 grinds to a halt and cannot render objects) and the other reported bugs in IE10?  Have Microsoft done anything about those, or will it just release what it has, then possibly fix these other problems later, in an SP (which seems to be the way with Microsoft software nowadays)?

    Also, what about this problem that the latest version of Office (365/2013) isn't compatible with older .DOC/.XLS files?  Who thought that was a good idea?  There seem to be some bad decisions being made at Microsoft recently…

    I really want to upgrade my laptop to Windows 8 and updated Office, but with everything I'm hearing, I feel it would be a major down-grade.  Can somebody "official" (i.e. a Microsoft Project Manager or Developer) please respond to my points.

  19. @Almost trustable says:

    You do realize that all browsers have their own specific code for certain situations, right?  That's actually how a lot of web standards have started.

  20. modern.IE WebGL says:

    Sounds great. But will this modern.IE help me to code some cool WebGL stuff on IE?

    Or is IE forever OLD?

  21. Entusiast says:

    Please release IE10 final version for Windows 7 with de modern.IE (Metro) mode…

  22. Dave says:

    Hey, so I downloaded the VirtualBox VM for windows 8 to test IE10, to my Ubuntu 12.1o desktop. When I try to extract the zip file, I get an error. This happens using the UI or on the command line, where I get the following error:

    >: unzip


     inflating: IE10 – Win8.ova          bad CRC f88df197  (should be 047c56d3)

    I've tried downloading it twice, and got the same error. Either the zip file you're providing is corrupt or.. I dunno. Maybe you didn't test it on Linux.

    Interestingly… At work, I accidentally tried the VMWare version in VirtualBox and it worked. But I cannot get it to work in VMWare player itself, or export it to ESXi server… an ESXi compatible version would be very nice to have, as apparently the VMWare Player version is not compatible with it.

  23. Frederick Yocum says:

    Thanks for bringing tools together to help designers and developers work with your browser, particularly the VMs.

  24. Dave says:

    So, are these VMs set to shutdown automatically after an hour or so? The IE 10 VM I finally got running in Virtualbox,  has done this twice. This makes it pretty much unusable for any useful purpose (test automation, debugging…).

  25. Arieta says:


    It is site independent. Keep browsing long enough and it happens anywhere, once IE reaches 1gb of loaded data. Sites moving larger data (ex. Youtube) are more susceptible to this as they reach the 1gb limit faster.

  26. Just checking says:

    Just checking to see if the IE Blog comment form has been fixed yet.

    Nope! Still broken.


  27. ElegantCoder says:

    Thanks for providing VMs.

    By the way, I need to install East Asian Language Support in Windows XP VMs, and It needs genuine Windows XP CD.

    How do you think Window XP VM is provided with East Asian Language Support?

  28. Roger says:

    Great that you make these images availible!

    When I try to unzip the IE9 image for Linux I get the following:


    warning []:  707116788 extra bytes at beginning or within zipfile

     (attempting to process anyway)

    error []:  start of central directory not found;

     zipfile corrupt.

    I was able to unzip the IE 10  image without any issues.

  29. @ElegantCoder, @Roger says:

    Haven't you noticed the comment above you?

  30. Raymond says:

    When will you be releasing IE 10 for windows 7? Windows 8 has been out for a while now.

  31. pmbAustin says:

    Know what I miss in Desktop IE10?  The swipe Back/Forward feature of ModernUI-IE10!  It's so convenient and intuitive.  Though it'd be nice if the page were cached better, so it didn't have to refresh the entire page every time (especially if only a few seconds have passed).  Some pages take a long time to re-fetch & render.

  32. Kalizga says:

    Virtualization images doesn't work. CRC error. I'm not surprised.

  33. get a working unzipper says:

    A number of people have mentioned that they’ve had trouble unzipping the images and that they may be corrupt. They’re not corrupt. There’s an issue in both OSX & Linux where using the OS’s default zip tool is failing to open the .zip file properly. The solution is to use a 3rd party unzip tool like “The Unarchiver” in the Apple app store or Peazip for Linux. These will correctly unzip the .zip files and give you working images.

  34. Roger says:

    What is the point in making a zip file that only works with specific unzipping software?

    And especially since it is target at Linux/OSX users it would make sense to create a zip file that works with default unzip tools for these systems…..

  35. @ Roger says:

    What is the point in making a zip-file that only opens with buggy software?

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