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Web Standards Update for Microsoft Visual Studio 2010 SP1


Adds CSS3 support and updates the HTML5 intellisense and validation including new JavaScript API's

3.2 Star
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5 Star
by TrezaWard | July 08 2016

Excellent. Solved the hassle of 100 warnings for not using css2.1 valid elements.

5 Star
by 阿基桑 | December 14 2014

0.0 中文版的可以用吗?

5 Star
by Ed (DareDevil57) | August 14 2014

1 Star
by John Suit | August 13 2014

Total crap. Avoid this. And Microsoft, please remove this fubar extension.

If you install this it will break Visual Studio's ability to open CSS files. Even if you create it brand new and it's empty, it won't open them.

Uninstalled and back to working again.

5 Star
by Bob Blork | May 30 2014

nice! very helpful!

1 Star
by Brajam | February 20 2014

Why the link doesn't work? It's fail

3 Star
by DKB | December 30 2013


5 Star
by CodeMonkeysR Us | March 28 2013

Works as designed for me. Nice to have it. Note I am installed in the default location for VS2010.

1 Star
by Chris Culver | February 21 2013

this thing made me want to punch my monitor

5 Star
by Waqas M | February 08 2013

Great to have this fix

3 Star
by Norseman4 | February 02 2013

Please let us know when this works, as per the channel9 video when the VS install directory is not drive C. (Boot [C] is a relatively small SSD, installs are in D, data is in E)

Mads, this looks like it would be great if it would work for me, but I've already spent a bunch of time dealing with the 'SP1 is required' issue, then seeing people reviewing about the problems with a typical, but apparently non-standard, installation location.

Since the video and hype is great, but the installation and usage has such issues, I've voted 3. It isn't crap or vaporware [1] and it isn't gold [5] (at least for me, get the installs fixed, then maybe).

5 Star
by Srigopal Chitrapu | January 11 2013

1 Star
by P. Verberne | December 11 2012

As you might see in the other reviews, some like some hate.
This software is not compatible. Unworthy.

3 Star
by Ralph Burleson | December 05 2012

1 Star
by Exe.Cute | October 31 2012


5 Star
by Ghukas | September 10 2012

It works perfectly. I had to reinstall this extension to be able to edit CSS files after installing security updates on SP1.

1 Star
by RWGr | July 26 2012

Unfortunately, I had to uninstall this. After installing I could no longer edit CSS files in Visual Studio getting the same "unspecified error" that others are mentioning. Once I uninstalled, I could edit CSS files again.

1 Star
by Felicemente | July 23 2012

Do NOT use this. After installing it, Visual Studio lost all ability to recognize CSS files, let alone have intellisense function. Uninstalling and trying to fix Visual Studio was a nightmare. Bad, bad, BAD extension.

5 Star
by Wahel Bouguesmia | July 11 2012

It works perfectly.

1 Star
by M. R. - Canada | June 19 2012

Do NOT install this!

1. Installed the new version, dated 6/4/2012
2. Once installed, I wasn't able to open a CSS file anymore...
3. Uninstalled it; waiting for the next version.

1 - 20 of 118 Items   
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  • Dot Less support?
    2 Posts | Last post June 27, 2011
    • What about dot less support? can you add that?
      It only needs a few tweaks or just not validate them
      @brand_color: #4D926F;
      #header {
        color: @brand_color;
      h2 {
        color: @brand_color;
    • Unfortunately, LESS support cannot be added without changing the running code of the parser and validator
  • Canvas
    1 Posts | Last post June 27, 2011
    • No html 5 canvas support? hmmm ...
  • Incompatible with Microsoft JScript Editor Extensions
    1 Posts | Last post June 18, 2011
    • When installed on a VS.NET SP1 that has the JScript Editor Extensions the backspace key stops working inside js code. Is there a way to make both tools work together? 
      JScript Editor Extensions:
  • For more information...
    7 Posts | Last post June 17, 2011
    • I have installed "Update for the .NET Framework 4", I think it might be helpful.
    • I installed this update, but seems the installer still not work. Who successfully installed this update?
    • I have success fully installed this update with no problems whatsoever.
    • I mean, Installing "Update for the .NET Framework 4" didn't solve the problem, just give more specific information of my environment to the developer(
      Mads Kristensen) for being helpful to correct the problem.
    • i installed this without any issues. 
    • Doesn't work... asks for installation of VS SP 1 even though its installed on my m/c. I am installing on a 64 bit virtual machine with Windows Server 2008 R2
    • Update: For those getting the message for installing VS SP1, please refer Wouter vanEck's solution mentioned in the "Reviews" tab.... Thanks!
  • First time install but states greater verision already installed
    2 Posts | Last post June 17, 2011
    • When installing this addin it states "Unable to installed because a newer verision of this product is already installed".  I checked to see if "Web Tools\Web Standards Update for Visual Studio 2010 SP1\" existed in the "Program Files" directory, not found.  VS2010 SP1 is installed and and the latest .net 4 framework patched have been applied.
      Any ideas?
    • Same problem here.
  • HTML 5 - Empty elements and closing tags
    6 Posts | Last post June 16, 2011
    • For this HTML:
        <img src='test.png' alt=''>
          <p>This is valid HTML, but not valid XHTML!
      Intellisense is still saying:
        Validation (HTML5): Empty elements such as 'img' must end with />.
        Validation (HTML5): Element 'p' is missing its closing tag.
      However, the HTML5 spec states that empty elements do not have closing tags, and do not have to be self-closing. Similarly, <p> tags do not need closing tags in many situations.
      It is bothersome that the editor is complaining about perfectly valid HTML5 markup.
    • Sorry for the lack of formatting... comments seem to ignore all line breaks!
    • Hi glen95,
      We are aware of this issue, but unfortunately this might not be something that is easy to fix in the schema files alone. It might require a change to the running VS code that handles the HTML parsing and validation. We hope to get the fix for this in the next update. 
    • After the update, my previously ok HTML5 validated documents in my mvc/razor project are suddenly saying Validation (HTML5): Element 'img' is not supported. Or 'div', 'a', 'iframe' and other content. Lovely.
    • "Service Pack 1 for Visual Studio 2010 must be installed. Do you want to download it now?" +1 
      Installed this but it not solve.
    • Okay, thanks Mads. As long as you are aware of it, for now, I'll make do with what can be done.
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