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[text] Why HTML5 urgently needs an HTML adaptive images mechanism

From: Laura Carlson <laura.lee.carlson@gmail.com>
Date: Thu, 21 Jun 2012 12:09:34 -0500
Message-ID: <CAOavpvcq00RKBOZA7g05zjDCWa4ZC=4gJ60YtoQREunSfp9_XA@mail.gmail.com>
To: HTML Accessibility Task Force <public-html-a11y@w3.org>
Cc: Bruce Lawson <bruce@brucelawson.co.uk>
For the HTML Accessibility Task Force info:

"Why HTML5 urgently needs an HTML adaptive images mechanism"
By Bruce Lawson.
"...Webkit has implemented a new non-standard CSS function called
-webkit-image-set...I bet it's 0.03 nanoseconds before developers
convert <img src="foo.blah" alt="useful alternate text"> into an empty
<div>s with adaptive background images using -webkit-image-set and
(please!) a fallback background images for non-webkit browsers. Why
wouldn't they? Retina screens will download massive but beautiful
images, while users of lower-res phones save bandwidth by downloading
smaller images instead of huge images and then reducing them down.
Problem solved. And, unfortunately, people who don't download images,
or can't perceive images won't get any alternate text, as there is no
content <img> element any more. Those guys have always been last in
the pecking order and there's no reason to assume they'll get a better
deal this time."

Best Regards,

On Mon, Jun 4, 2012 at 3:37 PM, Laura Carlson
<laura.lee.carlson@gmail.com> wrote:
> Hi all,
> Just an FYI as I'm not sure how many task force members have been
> following the copious  discussions regarding the topic of responsive
> images on the WHATWG mailing list*. There have been proposals for
> <picture>, @srcset, and now <pic>. Ian added  a new attribute called
> "srcset" to the WHATWG HTML spec in May. Today,  David Singer started
> a thread [1] regarding  alt text.
> Best Regards,
> Laura
> [1]  http://lists.w3.org/Archives/Public/public-whatwg-archive/2012Jun/0019.html
> *WHATWG Responsive Images Discussions:
> Fallback for <picture>
> http://lists.w3.org/Archives/Public/public-whatwg-archive/2012May/thread.html#msg216
> Throwing in my support for <picture> into the mix
> http://lists.w3.org/Archives/Public/public-whatwg-archive/2012May/thread.html#msg312
> An alternative to <picture> and srcset, is this realistic?
> http://lists.w3.org/Archives/Public/public-whatwg-archive/2012May/thread.html#msg237
> <picture>, `img set`, and polyfills
> http://lists.w3.org/Archives/Public/public-whatwg-archive/2012May/thread.html#msg243
> Features for responsive Web design
> http://lists.w3.org/Archives/Public/public-whatwg-archive/2012May/thread.html#msg247
> Ian added  a NEW ATTRIBUTE called "srcset" to the WHATWG HTML spec:
> http://www.whatwg.org/specs/web-apps/current-work/multipage/embedded-content-1.html#attr-img-srcset
> <picture> / <img srcset> not needed
> http://lists.w3.org/Archives/Public/public-whatwg-archive/2012May/thread.html#msg291
> Correcting some misconceptions about Responsive Images
> http://lists.w3.org/Archives/Public/public-whatwg-archive/2012May/thread.html#msg299
> Media queries, viewport dimensions, srcset and picture
> http://lists.w3.org/Archives/Public/public-whatwg-archive/2012May/thread.html#msg552
> The <pic> element
> http://lists.w3.org/Archives/Public/public-whatwg-archive/2012Jun/thread.html#msg1
> Also:
> Responsive Images Community Group:
> http://www.w3.org/community/respimg/
> --
> Laura L. Carlson

Laura L. Carlson
Received on Thursday, 21 June 2012 17:10:04 UTC

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