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Thread: Insights on Text Resizing
Number of posts in this thread: 8 (In chronological order)
From: Vivek.Gaikwad
Date: Thu, Nov 18 2010 6:06AM
Subject: Insights on Text Resizing
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Need some insights on the text resizing success criteria of WCAG 2.0. As
per WCAG 2.0, the page should be readable and functional even when the
font size is doubled. In this context, by how much percentage does IE
increases the font size when we change it from medium - larger and
larger - largest using the options provided in text size.
I'm trying to find out, how to quantify the term doubling (200 percent)
the size? Can we measure it? I tried some toolbars for it, but did not
get what I'm looking for. Is there any other better way to look at this?
peace, veiky
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From: Jared Smith
Date: Thu, Nov 18 2010 7:27AM
Subject: Re: Insights on Text Resizing
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On Thu, Nov 18, 2010 at 6:05 AM, < = EMAIL ADDRESS REMOVED = > wrote:
> I'm trying to find out, how to quantify the term doubling (200 percent)
> the size? Can we measure it?
I think you can visually estimate this pretty accurately. If your page
is readable and functional at 200 percent but unreadable and/or
dysfunctional at 201 percent, you would be conformant, but still have
some significant accessibility issues. You can apply a local style
sheet, edit local styles, or use Firebug or similar to double the font
size, though you need to be careful with inheritance which may give
you inaccurate results. I think common sense and good judgment
generally work well here.
Because Internet Explorer does not scale pixel-sized fonts, any other
browser will probably give you a more accurate representation of font
scaling.
Jared Smith
WebAIM.org
From: Dawn Budge
Date: Thu, Nov 18 2010 8:42AM
Subject: Re: Insights on Text Resizing
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IE will not take you up to 200% zoom with its standard controls.
In Firefox, go to View>Zoom and check Zoom Text Only. Starting from the
base zoom level, press Ctrl + 6 times to get to 200% zoom level. There is
also an add-on called No-Squint if you'd rather do that.
----------------------------------------
From: = EMAIL ADDRESS REMOVED =
Sent: 18 November 2010 13:07
To: = EMAIL ADDRESS REMOVED =
Subject: [WebAIM] Insights on Text Resizing
Need some insights on the text resizing success criteria of WCAG 2.0. As
per WCAG 2.0, the page should be readable and functional even when the
font size is doubled. In this context, by how much percentage does IE
increases the font size when we change it from medium - larger and
larger - largest using the options provided in text size.
I'm trying to find out, how to quantify the term doubling (200 percent)
the size? Can we measure it? I tried some toolbars for it, but did not
get what I'm looking for. Is there any other better way to look at this?
peace, veiky
This e-mail and any files transmitted with it are for the sole use of the
intended recipient(s) and may contain confidential and privileged
information.
If you are not the intended recipient, please contact the sender by reply
e-mail and destroy all copies of the original message.
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e-mail is strictly
prohibited and may be unlawful.
From: Terrill Bennett
Date: Thu, Nov 18 2010 1:15PM
Subject: Re: Insights on Text Resizing
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I've always thought that zoom is different than changing the text
size. Zoom affects all content including images, while changing text
size affects only the text. Some user agents allow for control of the
text size without zooming, other agents offer only zoom. Therefore,
both methods need to be tested.
Am I wrong?
In "Examples of Success Criterion 1.4.4" it gives one example where
the user increases text size from 1em to 1.2em, and another example
where the user zooms:
http://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-scale.html#visual-audio-contrast-scale-examples-head
Take, for example:
http://www.visionaustralia.org.au/
Click on the "Change text size" link at the top. Find the link for
the largest font size. When you click, watch the graphic logo in the
upper left corner - it does not change size, nor do the printer icons
on the right of the page.
Change the text size back to standard. Now zoom using your browser.
See the images and all other content scale.
There are developer toolbars for most popular browsers. If I'm
testing a site that doesn't have a "change text size control," I
usually open the developer toolbar, click on the body tag, and change
the font-size to twice whatever I find there. So, if the current size
says 2em, I change it to 4em. If nothing is there, I add
"font-size:200%". Text should now be at 200%.
Depending on the site, not all text may change. For example, perhaps
the H2 elements didn't change. So using the "inspect element" tool, I
click on an H2 element, and double the size for that element. If this
is the case, you shouldn't have to resize every element to get an
idea if the site is going to scale successfully.
It may not be a perfect solution, but necessity is the mother of
invention - and I haven't found tools available for every browser
that allows setting the text to a specific size.
-- terrill --
At 10:40 AM 11/18/2010, you wrote:
>IE will not take you up to 200% zoom with its standard controls.
>In Firefox, go to View>Zoom and check Zoom Text Only. Starting from the
>base zoom level, press Ctrl + 6 times to get to 200% zoom level. There is
>also an add-on called No-Squint if you'd rather do that.
>
>----------------------------------------
>From: = EMAIL ADDRESS REMOVED =
>Sent: 18 November 2010 13:07
>To: = EMAIL ADDRESS REMOVED =
>Subject: [WebAIM] Insights on Text Resizing
>
>Need some insights on the text resizing success criteria of WCAG 2.0. As
>per WCAG 2.0, the page should be readable and functional even when the
>font size is doubled. In this context, by how much percentage does IE
>increases the font size when we change it from medium - larger and
>larger - largest using the options provided in text size.
>
>I'm trying to find out, how to quantify the term doubling (200 percent)
>the size? Can we measure it? I tried some toolbars for it, but did not
>get what I'm looking for. Is there any other better way to look at this?
>
>peace, veiky
>
>This e-mail and any files transmitted with it are for the sole use of the
>intended recipient(s) and may contain confidential and privileged
>information.
>If you are not the intended recipient, please contact the sender by reply
>e-mail and destroy all copies of the original message.
>Any unauthorised review, use, disclosure, dissemination, forwarding,
>printing or copying of this email or any action taken in reliance on this
>e-mail is strictly
>prohibited and may be unlawful.
>
From: Marco Maertens
Date: Thu, Nov 18 2010 1:33PM
Subject: Re: Insights on Text Resizing
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Hi,
I'm not sure that testing both text zoom and page zoom is necessary. Since page zooming is the equivalent of using screen magnification, there shouldn't be an effect on the overall functionality (I know, I know, "shouldn't").
I think the intent and the far bigger concern is when text is zoomed, but everything else stays the same. Here, Firefox's Zoom Text Only -- as mentioned by Dawn -- is very helpful. Is there "overflow: hidden" that truncates text? Were heights or widths relying on default rendering sizes of text such that the layout is inoperably altered?
-Marco.
Marco Maertens
Web Developer and Accessibility Specialist
Empathy Lab
610-572-2371
From: Jeevan Reddy
Date: Thu, Nov 18 2010 11:30PM
Subject: Re: Insights on Text Resizing
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Hi Vivek,
I've no idea is there any tool in IE to do this job.
You can Try Color Zilla addon for firefox, it'll help you to resize
web page from 20% to 1000%
And also it'll allow you to analyze different color aspects.
Here is the Download URL:
https://addons.mozilla.org/en-US/firefox/addon/271/
Cheers,
Jeevan,
Accessibility Engineer,
Onya Digital Solutions, Bangalore,
Cell: +91 8050761380.
On Fri, Nov 19, 2010 at 2:00 AM, Marco Maertens < = EMAIL ADDRESS REMOVED = >wrote:
> Hi,
>
> I'm not sure that testing both text zoom and page zoom is necessary. Since
> page zooming is the equivalent of using screen magnification, there
> shouldn't be an effect on the overall functionality (I know, I know,
> "shouldn't").
>
> I think the intent and the far bigger concern is when text is zoomed, but
> everything else stays the same. Here, Firefox's Zoom Text Only -- as
> mentioned by Dawn -- is very helpful. Is there "overflow: hidden" that
> truncates text? Were heights or widths relying on default rendering sizes of
> text such that the layout is inoperably altered?
>
> -Marco.
>
> Marco Maertens
> Web Developer and Accessibility Specialist
> Empathy Lab
> 610-572-2371
>
>
From: Vivek.Gaikwad
Date: Fri, Nov 19 2010 1:06AM
Subject: Re: Insights on Text Resizing
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Thanks everyone for inputs. Specially to Terrill, for sharing your real
time experience.
peace, veiky
From: Jeevan Reddy
Date: Fri, Nov 19 2010 2:12AM
Subject: Re: Insights on Text Resizing
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On Fri, Nov 19, 2010 at 11:59 AM, Jeevan Reddy
< = EMAIL ADDRESS REMOVED = >wrote:
> Hi Vivek,
> I've no idea is there any tool in IE to do this job.
> You can Try Color Zilla addon for firefox, it'll help you to
> resize web page from 20% to 1000%
> And also it'll allow you to analyze different color aspects.
> Here is the Download URL:
> https://addons.mozilla.org/en-US/firefox/addon/271/
>
> Cheers,
> Jeevan,
> Accessibility Engineer,
> Onya Digital Solutions, Bangalore,
> Cell: +91 8050761380.
>
>
> On Fri, Nov 19, 2010 at 2:00 AM, Marco Maertens < = EMAIL ADDRESS REMOVED = >wrote:
>
>> Hi,
>>
>> I'm not sure that testing both text zoom and page zoom is necessary. Since
>> page zooming is the equivalent of using screen magnification, there
>> shouldn't be an effect on the overall functionality (I know, I know,
>> "shouldn't").
>>
>> I think the intent and the far bigger concern is when text is zoomed, but
>> everything else stays the same. Here, Firefox's Zoom Text Only -- as
>> mentioned by Dawn -- is very helpful. Is there "overflow: hidden" that
>> truncates text? Were heights or widths relying on default rendering sizes of
>> text such that the layout is inoperably altered?
>>
>> -Marco.
>>
>> Marco Maertens
>> Web Developer and Accessibility Specialist
>> Empathy Lab
>> 610-572-2371
>>
>>