Tap here to go to the mobile version of the site.
Your Firefox is out of date and may contain a security risk! Upgrade Firefox

Support Forum

'Page Info' doesn't support HTML5 'meta charset' tag?


Admittedly this isn't a catastrophic problem, but it seems that the Firefox 'Page Info - General' dialog does not support HTML5's '<meta charset="UTF-8">' tag - the dialog displays an empty line in my Firefox 21.0 browser.

If the meta charset tag is changed to the pre-HTML5 version of '<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> the Page Info dialog displays the 'Content-type' information.

Other posts I've seen suggest that Firefox's HTML5 support has been frozen except for new HTML5 standards that may be added as they are finalised.

Does that mean that this omission is going to be left unfixed?

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.25.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Shockwave Flash 11.7 r700
  • VLC media player Web Plugin 2.0.6


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0

More Information

  • Top 10 Contributor
2357 solutions 20872 answers

Looks as though someone started working on this in 2010, but interest (?) petered out?

Bug 584285 – Meta tag list: HTML5-style charset is not displayed / meta tags in body are displayed

About the Bugzilla bug tracking system: If forum members can contribute to the development, please feel free to pitch in. Otherwise, it's generally not helpful to add comments to bugs (unless there is a call for test cases), but you can register on the Bugzilla site and "vote" for them to be fixed. See:

Question owner

Thanks for the quick response.

It isn't a critical issue. I was just very surprised to find that the Page Info dialog still doesn't support this aspect of HTML5 - according to this Wikipedia article Firefox has supported the HTML5 meta charset tag since Gecko 1.92 (ie Firefox 3.6).