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RE: suggested WOFF changes

From: Levantovsky, Vladimir <Vladimir.Levantovsky@MonotypeImaging.com>
Date: Tue, 22 Jun 2010 11:00:58 -0400
To: John Daggett <jdaggett@mozilla.com>, John Hudson <tiro@tiro.com>
CC: "public-webfonts-wg@w3.org" <public-webfonts-wg@w3.org>, www-font <www-font@w3.org>
Message-ID: <7534F85A589E654EB1E44E5CFDC19E3D03F3DB5348@wob-email-01.agfamonotype.org>
On Monday, May 10, 2010 10:24 PM John Daggett wrote:
> > User Agents MUST NOT permanently install fonts delivered in a WOFF
> > format as system resident fonts, and SHOULD only use downloaded
> > fonts to render the content of a webpage that WOFF resources are
> > associated with.
> This is redundant, the CSS3 Fonts specification already defines this
> behavior for *all* font types, not just WOFF [2].  See section 4.1:
>   "Downloaded fonts are only available to documents that reference
> them,
>    they must not be made available to other applications or other
>    documents."
> The primary reason for this is security, the content of a given page
> should not influence content of a different page unless the resources
> are explicitly shared (i.e. the pages link to the same resource).

I found an interesting discussion where WOFF was mentioned [1], and it appears that the UA behavior/requirements specified by CSS spec with regard to downloadable fonts may not be supported by some browsers. In light of this discussion: taking into account that implementers expect to see any relevant requirements clearly mentioned in the spec and that the WOFF spec is so far the only web font specification developed by W3C - I think it's worth to mention explicitly what the expected UA behavior must be when consuming WOFF resource, and appending the proposed text to the second paragraph of the Introduction section seems to be logical and appropriate.

I don’t think it would be a problem reiterating what CSS spec already says (and we can also make a reference to CSS spec here to connect the dots).

Thank you and regards,

[1] http://krijnhoetmer.nl/irc-logs/whatwg/20100303#l-194

> CSS3 Fonts @font-face description:
> [2] http://dev.w3.org/csswg/css3-fonts/#font-face-rule 

Received on Tuesday, 22 June 2010 15:01:42 UTC

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