HTML 5 Intellisense for Visual Studio 2010 and 2008


HTML 5 Intellisense for Visual Studio and Visual Web Developer 2010 and 2008

(28) Review
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by Tuyen Minh Nguyen | August 29 2013

Thank you.

by Ali.Alikhani | June 28 2013

by Mr. Wharty | June 08 2012

Another great add-in

by Dragan Radovac | June 08 2012

very useful

by The Thinker | May 19 2012


by AudsKu | April 12 2012

by Asaf Benyamin | March 13 2012

by ctzn99 | January 18 2012

If you want to stop the xsd reporting that it needs a type attribute on the script element it's a fairly straight forward change to the xsd.

Assuming default installation:
C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\Packages\schemas\html\html_5.xsd

1) By default the file is readonly for standard users, change the file permissions so the file is editable by you.

2) Using any text editor, open the file and navigate to line 581, it should look like:
<xsd:attribute name="type" vs:readonly="true" use="required">

3) Remove the use="required" attribute and save the file.


by Steef-Jan Wiggers | November 03 2011

by Cengiz Gür | November 02 2011

ihtiyacı karşılayacak nitelikte, teşşekkür ederim.

by Jon Davis | October 04 2011

Annoyed. It demands a type="" attribute for the script tag, which is not required. If you're going to have an official markup schema, get it right, guys! Script tag is like the 6th most common HTML tag after html, body, head, div, and p!

by AS_iND | September 26 2011

Installed fine, works fine. Some things (like figcaption tag) are missing, though. I'd be nice if the developer of this plugin would update the package and possibly reply to people's comments.

by Krzysztof Adam | September 17 2011

Unfortunately, the addon doesn't work. Intellisense does not show markup for the html5 and correct's it to XHTML.

by İlkay Taşkıran | August 15 2011

good but For 2010 would be nice though

by Waqas Zahoor | July 28 2011

by MihaNikUs | May 27 2011

by Jonathan Gardner - MSFT | May 26 2011

Great add-on for our web developers.

by Supuhstar | May 11 2011

Glad to finally have it, but it keeps saying that <center> is not supported

by Markow123 | May 02 2011

Good stuff, finally!

Yea, it asks for type="" for <script> tags, and still doesn't do self-closing tags for you (<img>, <br>, <input>, etc) for the ease of XML back and forth, etc.

Lastly, it also doesn't recognize that data- attributes are valid in HTML (ie: <img src="" data-image=""> etc)

Sure these will be fixed in the future just wanted to let the developers know! Thanks again though

by CyrusJ | March 11 2011


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  • Validation dosent change
    1 Posts | Last post January 01, 2015
    • after install this plugin , html5 tags are supported , but Validation is still xhtml . i change it in Tools->Options->Text Editor->HTML->Validation to HTML5 . but in source tab , first line is xhtml validation . why ???
  • Not able to use HTML5 After installion
    3 Posts | Last post December 18, 2012
    • Hello
      I have just installed HTML5 and CCS3 in my laptop. I am using vs 2010. I have changed validation to HTML5 but Its display that "It is not a valid element". 
    • Which element is it?
    • I'm seeing this too.  It doesn't like the source tags within the video tag nor does it like param tags within the object tag.  I've selected both HTML5 and XHTML5 from the HTML Source Editing Toolbar in VS2010.
  • Does it work in VS 2012
    2 Posts | Last post December 06, 2012
    • Or is there something equivalent?
    • VS 2012 includes HTML 5 in the box, this extension is no longer needed.
  • All Q and no A, here
    1 Posts | Last post November 17, 2011
    • Doesn't install to where it says it will. Provides on Intellisense. NOGO -> Uninstall -> Wait for MS to build into VS2010
  • What should I do?
    1 Posts | Last post June 20, 2011
    • 1.I've run the extension installer and restarted Visual Studio however I did not see HTML 5 in drop down list of target after I clicked Tools->Options->Text Editor->HTML->Validation. What should I do?
      2.After I run the installer, is it means the CSS3.0 is in the correct location? Where is the correct location? How can I know it is worked in my VS?
  • Alternate method
    2 Posts | Last post May 31, 2011
    • I downloaded the file and followed the steps in this <a href="">blog post</a> and it works fine in VS2010.
    • Would be nice if the installer made mention of changing the HTML Validation settings. I blame Steve Ballmer.
  • how i can use it
    1 Posts | Last post October 23, 2010
    • how i can use it.i installed it 2 time but i can't find schema in my visual studio this installation goes to c/programmfile but he show that in c:/programmfile(86)..
      how i can use it
  • Installer does not install to correct location
    1 Posts | Last post September 26, 2010
    • The installer for this add-on does not install to the correct location. It assumes that Visual Studio is installed to the default installation location (as specified in the Visual Studio installer). However, I installed Visual Studio to a custom location. Therefore, after installation, the html_5.xsd file is in the wrong location and is not found by Visual Studio causing Intellisense not to work. Please fix your installer so that it recognizes non-default installation locations.
  • CSS3
    1 Posts | Last post September 18, 2010
    • Works fine for me. However, does anyone know if VS 2008 support CSS3 yet?
  • script tag
    1 Posts | Last post August 27, 2010
    • isn't the type attribute of the script tag redundant in HTML5?
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