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Thread: Web graphics accessibility
Number of posts in this thread: 5 (In chronological order)
From: Caroline ZBF
Date: Sun, May 13 2007 11:40AM
Subject: Web graphics accessibility
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I would like to know if someone knows a technique to evaluate the accessibility of graphics?
Thanks
From: Patrick H. Lauke
Date: Sun, May 13 2007 12:40PM
Subject: Re: Web graphics accessibility
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Caroline ZBF wrote:
> I would like to know if someone knows a technique to evaluate the accessibility of graphics?
Define "accessibility of graphics". What kind of graphics? What aspect
of accessibility are you trying to evaluate? For which user group?
P
--
Patrick H. Lauke
From: Sawang Srisom
Date: Sun, May 13 2007 6:50PM
Subject: Re: Web graphics accessibility
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Dear all,
It seems to me that many people are frustrated of images when they create an
accessible website. Some even think that accessible websites cannot contain
images. I have some easy recommendations as follows (please help me fill in
more if I have missed any):
1. For illustration, just provide "alternative text" in the ALT attribute
(say what the image is about).
2. If the image contains a complicated content, provide a longdesc or D
link (link to a long-description HTML file).
3. For decoration, it is recommended to convert all those images into
background images by using CSS; otherwise, set the ALT to "".
Sawang Srisom
-----Original Message-----
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[mailto: = EMAIL ADDRESS REMOVED = ] On Behalf Of Caroline ZBF
Sent: Monday, May 14, 2007 12:38 AM
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Subject: [WebAIM] Web graphics accessibility
I would like to know if someone knows a technique to evaluate the
accessibility of graphics?
Thanks
From: Emma Duke-Williams
Date: Mon, May 14 2007 5:00AM
Subject: Re: Web graphics accessibility
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On 14/05/07, Sawang Srisom < = EMAIL ADDRESS REMOVED = > wrote:
> Dear all,
>
> It seems to me that many people are frustrated of images when they create an
> accessible website. Some even think that accessible websites cannot contain
> images. I have some easy recommendations as follows (please help me fill in
> more if I have missed any):
>
> 1. For illustration, just provide "alternative text" in the ALT attribute
> (say what the image is about).
With some caveats. E.g. if the site is about Dogs, it might be more
useful to know that it's a labrador, than the fact that it's asleep.
(Unless you've got a site about insomniac dogs!)
> 2. If the image contains a complicated content, provide a longdesc or D
> link (link to a long-description HTML file).
Not forgetting that for many users, an image of something (e.g. a
diagram) might well be an easier way of describing it than text - e.g.
for those who are dyslexic/ the website is in a language that isn't
their first language.
When people suggest the "Some even think that accessible websites cannot contain
images." - it's often worth pointing out the value that images can add
to a site.
As Patrick commented, knowing the user group is vital!
Emma
--
Blog: http://www.tech.port.ac.uk/staffweb/duke-wie/blog/
From: Susan Grossman
Date: Mon, May 14 2007 11:00AM
Subject: Re: Web graphics accessibility
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Another consideration is the image itself. I use the Vischeck photoshop pto
look at the image itself for how it appears to certain color-blindness
impairments.
http://www.vischeck.com/info/wade.php
--
Susan R. Grossman
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