Testing Accessibility

This is a discussion on Testing Accessibility within the Accessibility and Usability forums, part of the Web Design category; What do you use to test accessibility (if anything).? Where I used to work, they used to use watchfire's bobby, ...


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Old 15th September 2009, 09:23 AM   #1
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Default Testing Accessibility

What do you use to test accessibility (if anything).?

Where I used to work, they used to use watchfire's bobby, and once it met the testing criteria they were happy (that was until I played back the website to them through JAW's)

There are a number of tools out there to help you test automatically; do you use any of them?

Which one have you found to be the best?

The reason for asking is that I have to come up with a set of criteria and measures for our website, one of which will be accessibility. Obviously, this has to be explained and taken with a pinch of salt - I mean the guidelines are around 7 years old now, and as such many actually hinder accessibility.

I don;t want this to be an onerous task, and automating most of it will help, I just need the right/best tool.
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Old 15th September 2009, 09:25 AM   #2
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i use my knowledge, and thus i do most of my testing, using various browsers and changing settings to change how i view the website.

i've tried a few tools in the past, and never found them any good.

Last edited by Gaz; 15th September 2009 at 09:27 AM..
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Old 15th September 2009, 09:56 AM   #3
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I do recommend actually using a screen reader, at least once in a while. Getting experience of how these things actually work is enlightening. I used to use Fangs for Firefox, but it never got updated to work with newer versions. A quick search for something new reveals this: Fire Vox.

I would use JAWS, but I can't justify the cost. Perhaps one day I'll find a not-quite-legal version. ;) It's great that you have access to JAWS. :)

Automatic tests are of limited use. You can't use an algorithm to determine how accessible a site is. However, provided you treat the results circumspectly (i.e. don't just blindly implement every suggestion), they can help you find a few issues you may have missed.

Check dependencies by turning off javascript, images, and CSS. Try different combinations, as sometimes they interact strangely (images on, CSS off is a good one for screwing up so-called "accessible" image-replacement methods).

Read the WCAG, but again be circumspect. Most of their advice is good, but some recommendations actually harm accessibility (for example, access keys are a Bad Idea, as they interfere with browser keyboard commands). So in order to reach AAA compliance, you have to implement at least one detrimental suggestion. ;)
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Old 15th September 2009, 11:03 AM   #4
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Thanks for the suggesstions guys,

JAW's is a nice tool, but I find it boring; I guess the monotony of the tone of voice just puts me to sleep... However, as you mention, it is good as a once every 6 months test to ensure it is all working as it should.

I guess what I am looking for is a way to measure a sub set of the WCAG guidelines (the ones we want to adopt), and then provide statistics to my manager / the wider audience on how we are doing.

If you are testing manually, then it is always a finger in the air guess - "yeah, about 60% done me old china"
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Old 15th September 2009, 01:28 PM   #5
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You could take the output of Bobby (say), and count the number of checkpoints passed out of the total number that you wish to adopt. That would give a crude-but-objective measure.

I suppose you'd rather automate this, but I don't know of any accessibility tools with configurable scoring (as Yslow 2.0 allows for its grading system).
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Old 15th September 2009, 05:38 PM   #6
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Hi Stew, Is that software called JAWS Desktop Suite version whatever the version is now. ??
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Old 15th September 2009, 09:00 PM   #7
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I use the same method to test accessibility as I use for SEO: The Ultimate 5-Minute Guide to SEO | Blog | Theron Luhn | Web Design and Development

Simple but effective It's not automated or anything, but I find automated tools really can't measure the sites accessibility. (Of course, I haven't really used as high-level accessibility testings such as JAWS before, so I can't comment on those I suppose)

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Old 15th September 2009, 09:50 PM   #8
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Stew. Do you find that JAWS is buggy..? I installed it in trial mode and it changed my font/keyboard layout broswers would NOT start even after reboot. Done scans thinking it was malware or spyware even a virus and nothing. So I had the FULL copy next and after rebooting it was still the same. In the end I had to do a "partial system restore" to get my PC back.

My PC is running fine now. The thing is that the trial mode was from the offiicial website. I can understand that if it wasn't there may have been some hidden virus,worm or whatever but from the main website...? Strange!!

Personally for what you pay for it I think it is rubbish. Maybe because I wasn't sure how to use it but also the problems with it. Have you ever had issues...?

Did you get the version that costs a couple hundred quid...? Version 10.0.1..?
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