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Analyze HTML Elements & Microformats w/ Semantic Checker

Analyze HTML Elements & Microformats w/ Semantic Checker

Semantic Checker is a new and still experimental Firefox addon (download it here) highlighting semantic elements in the web page you are currently viewing.

The tool should be used for on-page analysis as well for educational purposes (to see which sites are introducing new HTML elements and microformats, for example).

Here are the elements the tool supports:

Semantic HTML4 elements

  • Shortened words: <abbr> and <acronym> (by the way, if you are wondering about the difference, find it here);
  • Headings: h1-h6;
  • Quoting: blockquote, cite (more info can be found here)
  • Lists: dl, dir, menu (more information here, the latter two are deprecated)
  • Emphasis tags: <em>,<strong>
  • More elements: code, dfn, address, legend, samp

Semantic HTML5 elements

For all those interested, here’s a cool list of HTML5 tags. The tool supports the following ones:

  • Sections: article, aside, header, footer, nav;
  • Content, media, data etc tags : figure, mark, meter, audio, video, progress, time, command, datagrid, details, datalist, keygen, bb, outpu, ruby
  • Input-attributes: datetime, datetime-local, date, month, week, time, number, range, email, url, search, color


  • hCard, hCalendar
  • rel-license, rel-nofollow, rel-tag
  • Vote Links

Now let’s try to use the tool at a number of popular web pages.

Twitter Profile:

Semantic checker Twitter

Facebook Group Page

Semantic Checker: Facebook group

Stumbleupon Favorites Page:

Semantic checker: stumbleupon

My verdict:

I liked the tool for the following of reasons:

  • It’s a great way to track new HTML elements and microformats being implemented;
  • The tool can also be used for on-page diagnostics (to analyze headers, nofollow attribute, etc);
  • The addon is quite invisible: it won’t bug you until you click it.

Note: huge thanks to Webnauts for sharing the tool with me.

The tool was reviewed under SEJ policy.

Category Tools
Ann Smarty Brand amd Community Manager at Internet Marketing Ninjas

Ann Smarty is the blogger and community manager at Internet Marketing Ninjas. Ann’s expertise in blogging and tools serve as ...

Analyze HTML Elements & Microformats w/ Semantic Checker

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