The Problem with Automated Accessibility Testing Tools

An automated accessibility tool is a piece of software which can test a web page, or even an entire website, for accessibility. Automated accessibility tools are useful because they can save you a huge amount of time. Don't want to check images for alt text on each and every page on your website? Run the site through an automated tester and it'll do it all for you!

Automated accessibility testing tools have been around for a long time and have historically been a useful way of checking websites for accessibility. Bobby, one of the first and most well-known automated accessibility testing tools, is now almost 10 years, and although is no longer freely available, plenty of other free tools such as WebXact (http://webxact.watchfire.com/) and Wave (http://wave.webaim.org/index.jsp)do exist.

But are these tools a little too good to be true? Can you test a website for accessibility so easily? Unfortunately the answer is a resounding no. There are a number of underlying problems associated with using just automated tools to test for accessibility:

Literal interpretation of guidelines

Any automated accessibility testing tool, being a piece of software, doesn't have very much in the way of common sense. It will interpret each and every accessibility guideline literally, without bearing any other thought to what else is on the page.

The definition of the word guideline, according to Dictionary.com, is "a rule or principle that provides guidance to appropriate behaviour". A guideline simply offers guidance to what the best practice is - it shouldn't just be applied without regard to other factors.

For example, one of the W3C accessibility guidelines states that a table summary should be provided for all tables. (This summary doesn't appear on the screen, but it's read aloud to screen reader users before reading through the table content.) Table summaries are useful as they tell screen reader users what to expect in the table. However, there may be a heading directly before the table and it describes what the table is about. In this instance, this summary is essentially useless as it will just repeat what the previous heading said.

Can't check any content issues

The way that content is structured both on the page and across the website is a massive part of accessibility. A website may be perfectly coded and conform to the highest coding standards. If its content is poorly structured though, the site will prove difficult to impossible for some special needs web users.

There are a number of important accessible content considerations, none of which automated accessibility testing tools can check for. Some of these important considerations include:

- Front-loading content so that each paragraph begins with the conclusion

- Ensuring content has been broken down into manageable chunks with descriptive sub-headings

- Using lists wherever appropriate

- Ensuring that plain and simple language is used

Can't check many coding issues

The vast number of accessibility guidelines tend to be related to how the site is coded. Automated accessibility testing tools are unfortunately unable to test for many of these too. Examples of HTML-related accessibility considerations which these tools can't check for include:

- Ensuring that text is real text and isn't embedded within images

- Making sure that the site functions without the use of JavaScript or Flash

- Providing equivalent text links if using server-side image maps

- Ensuring that the structure within the HTML reflects the visual appearance (e.g. headings are labelled as headings within the HTML code)

Outdated guidelines are used

Automated accessibility testing tools generally use the W3C accessibility guidelines, which by now are over five years old. As such, a number of these guidelines are outdated and don't apply anymore. In fact, some of them are now thought to hinder accessibility rather than help, so it's best to totally ignore these guidelines.

For example, an automated accessibility testing tool will probably insist that form items contain default place holding text. It may also insist that links need to be separated by non-link text. Neither of these guidelines are relevant anymore and their implementation could make accessibility worse rather than better.

Most guidelines aren't properly checked

Automated accessibility tools can check for a number of guidelines, and can tell you when a guideline isn't being adhered to. However, when the tool claims that a guideline is being fulfilled this may in fact be a false truth.

For example, if all images contain alt text then the software will report a pass for this guideline. But what if the alt text isn't descriptive of its image? What if alt text is crammed full of nonsensical keywords for search engines? How can an automated accessibility tool possibly know this?

Warnings may be misinterpreted

The reports generated by automated accessibility tools provide warnings, as well as errors. These warnings are basically guidelines that the automated tool can't check for, but which may be errors. Often they're not, and in fact they're often not even relevant. However, some people reading a report may try to get rid of these warning messages by making the appropriate changes to their site. By doing so, they may be implementing guidelines that needn't be implemented and inadvertently lowering the website's accessibility.

Conclusion

Automated accessibility testing tools can be useful as they can save a large amount of time in performing some very basic checks for accessibility. However, they must be used with caution and they cannot be used as a stand-alone guide for accessibility checking. Indeed, some expert accessibility knowledge should always be applied in evaluating a site accessibility, perhaps in conjunction with the fantastic web accessibility toolbar (http://www.nils.org.au/ais/web/resources/toolbar/) to help dramatically speed up manual checks.

This article was written by Trenton Moss. He's crazy about web usability and accessibility - so crazy that he went and started his own web usability and accessibility consultancy (Webcredible - http://www.webcredible.co.uk)

Ancona limousine airport .. Lockport Chicago limo O’Hare
In The News:

Health insurance giant Blue Shield of California confirmed it had been sharing private health data of 4.7 million users with Google for three years without even realizing it.
Delta and JetZero’s blended wing body aircraft marks a meaningful step toward a cleaner, quieter and more efficient future for air travel.
Recent reports show many common passwords can be cracked in literally seconds. Kurt the CyberGuy explains how to strengthen your passwords.
Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.
Iron, a robot that stands 5 feet, 8 inches tall and weighs 154 pounds, combines advanced artificial intelligence with human-like movement and exceptional vision.
Hertz, the rental car giant, recently confirmed that customer information was exposed through a cyberattack on one of its software vendors.
There are a number of features with AirPods you may or may not know about to take your listening experience to the next level. Kurt the CyberGuy explains.
These 35 Chrome extensions have privacy and security concerns. Tech expert Kurt “CyberGuy" Knutsson says to delete them now.
Tech expert Kurt “CyberGuy" Knutsson says 329,000 mph fusion rocket promises to be fast, disruptive and enable deep-space missions.
Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.
Tech expert Kurt “CyberGuy" Knutsson says a new autonomous AI is a game changer that also raises privacy risks. Is your data safe?
Tech expert Kurt “CyberGuy" Knutsson says robots and drones are revolutionizing fruit farming with faster picking and smarter handling.
Landmark Admin revises May 2024 cyberattack scope to show twice as many people were affected. Kurt “CyberGuy" Knutsson gives tips to help stay safe from an insurance data breach.
Tech expert Kurt “CyberGuy" Knutsson talks about how Yamaha’s hydrogen outboard motor could revolutionize boating with zero emissions.
Tech expert Kurt “CyberGuy" Knutsson reveals how to memorialize or remove a deceased loved one’s Facebook account and protect their digital legacy from misuse or scams.
Tech expert Kurt “CyberGuy" Knutsson says an Apple Watch saved psychiatrist Amanda Faulkner by detecting deadly leukemia early.
Scammers and fraudsters are increasingly targeting the most vulnerable, especially nursing homes and the personal data of their residents. Kurt the CyberGuy has safety tips.
Infected USB flash drives can spread malware among multiple organizations in ways that can easily bypass traditional security systems.
With a fully automated warehouse system and AI-powered robots, Ocado's Hive picks, packs and delivers grocery store orders in just a few minutes.
Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.
Recycling robots are using artificial intelligence to learn how to sort recyclables by recognizing patterns in colors, textures, shapes and logos.
The Reachy 2 robot is designed to be friendly and approachable, inviting natural interaction and is perfect for research, education and experimenting with embodied AI.
Kurt "CyberGuy" Knutsson shares several easy ways to keep your credit cards safe from digital thieves while you're traveling this summer.
Arcturus sets up cameras around the edges of baseball stadiums to capture real-time action and generate a 3D digital clone of the game.
Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Successful Web Development: 10 Key Elements

There are many elements that are key to successful web... Read More

Find the Purpose of Your New / Proposed Website

Absolutely everything stems from the purpose of your website -... Read More

Why do I Need a Website?

Cost Effective Advertising. Online selling. Increased geopgraphic range. Wider... Read More

Whats Your Business Online Attitude?

This article was prompted by some customer support work I... Read More

Linking Out is Good

Many websites I come across don't have a single link... Read More

10 Simple Steps: Its Magic If You can E-Mail You can Update Your Web Page Dynamically

Dynamically Update Your Web Pages Via E-MailIf you can Send... Read More

My Yahoo Search - Beyond Bookmarks

Yahoo has long offered email, an online calendar, notes, bookmarks,... Read More

Improve Conversion Rates ? Load Times

Your site is getting traffic, but conversion rates are horrible.... Read More

Your Content for Nothing and Your Clicks for Free

The first thing my business consultant (read brother-in-law) asked me,... Read More

Top 5 Reasons to Track Your Website Traffic

#5 User Satisfaction: Learn what your visitors and site users... Read More

Website Survival Guide

In the big, wide online world there are millions of... Read More

Be Creative Before You Purchase Or Create A Website

Before you jump into spending coutnless hours on designing and... Read More

Three Things Every Website Should Do

When I started my company in 2002, I knew I... Read More

Creating a Sticky Web Site

When used to describe a web site, the term "sticky"... Read More

How to Promote Your Law Firm Website On the Internet for Maximum Profit

Making maximum profit from your law firm website is important,... Read More

10 Tips For A Successful Website

Have you ever thought the secret behind the success of... Read More

Build It and They Will Come

Build it and they will come is not always true;... Read More

How To Start Your Own Website

I'm one of those people that always wanted a website,... Read More

Ebooks for Webmasters

Internet has opened a whole new world for web developers... Read More

How to Get a Knock Out Website!

The first step in setting up an online business...Starting an... Read More

Do You Really Need A Website To Succeed

Rosalind wants to share her inspirational poetry with a wider... Read More

Conceptualize, Build and Publish a Web site

Conceptualize, Build and Publish a Web site - What's required... Read More

Make Your Artist Website Sell!

SummaryHere's the scoop on what you must know when designing... Read More

Now You Have a Web Site - Have You Ever Heard of Accessibility?

An accessible Web site is easily approached, easily understood, and... Read More

3 Ways To Increase Your Websites Conversion rate

Everywhere you look these days, people are telling you that... Read More

Buffalo Grove cheapest limo ..