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RE: Intrinsic size of jpeg images

From: Mark Moore <mark.moore@notlimited.com>
Date: Fri, 28 Jan 2005 18:24:58 -0800
To: <www-style@w3.org>
Cc: "'Ian Hickson'" <ian@hixie.ch>, <leslie.brown@evidian.com>
Message-ID: <E1CuiKo-000129-5L@frink.w3.org>

Isn't the fundamental problem that the 2.1 spec says *nothing* about which
image formats are supported?

If JPEG were required, recommended, or even optional, the standard could
specify how to treat the resolution information, if at all.

As it is now, no image format can be *expected* to work since their support
is unspecified.  Any random rendering at all is conformant.

The fact that png, jpeg, and gif images are supported as consistently as
they are by User Agents is simply a series of rather fortunate events.

Incidentally, jpeg rendering isn't exercised in the current CSS Compliance
Test Suite[1].  Only png and gif images are included so far[2].

This implies (to me anyway) the png and gif formats are REQUIRED for
graphical UA conformance, or at least highly RECOMMENDED.

[1] http://www.w3.org/Style/CSS/Test/CSS2.1/current/
[2] http://www.w3.org/Style/CSS/Test/CSS2.1/current/support/
Received on Saturday, 29 January 2005 02:27:38 UTC

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