Karl Groves

Tech Accessibility Consultant
  • Web
  • Mobile
  • Software
  • Hardware
  • Policy
Telephone
+1 443.875.7343
Email
karl@tenon.io
Twitter
@karlgroves

Alexa Top 100 Accessibility

The following data comes from automated accessibility testing of the Alexa Top 100 US websites (minus the pr0n, search engines, social networks and sites primarily driven from user content) using AQUA and lists their performance from worst to best (based on density of errors per page). This information comes with the important caveat that it is limited to automated testing. That being said, my own experience has been that poor performance in automated accessibility testing is strongly correlated with poor performance in manual accessibility testing as well.

Site
Name
Errors Warnings Pages Tested Avg Per Page (Errors +
Warnings)
Avg. Per Page (Errors Only)
LA Times 75 46 1 121.00 75.00
Wal Mart 23691 9404 500 66.19 47.38
IMDB 22746 35552 496 117.54 45.86
CNN 22255 18354 498 81.54 44.69
Answers 21663 2477 500 48.28 43.33
Roadrunner 183772 131066 4979 63.23 36.91
Huffington Post 17652 2697 499 40.78 35.37
Best Buy 383 1886 12 189.08 31.92
Fox News 11456 5478 361 46.91 31.73
Weather Channel 13868 13035 491 54.79 28.24
Washington Post 12850 19892 464 70.56 27.69
NFL 12104 27059 498 78.64 24.31
CNET 11863 34408 499 92.73 23.77
eHow 3987 1464 199 27.39 20.04
Wall St. Journal 201 243 16 27.75 12.56
New York Times 6085 6458 496 25.29 12.27
Microsoft 4824 15804 431 47.86 11.19
Apple 4690 6705 500 22.79 9.38
Chase 2908 848 361 10.40 8.06
BBC 3823 10364 483 29.37 7.92
PayPal 2992 4822 498 15.69 6.01
AOL 60 56 10 11.60 6.00
About.com 833 401 142 8.69 5.87
Netflix 2544 1814 474 9.19 5.37
Verizon Wireless 1447 940 275 8.68 5.26
Comcast 1803 745 368 6.92 4.90
USPS 1158 3289 338 13.16 3.43
Wells Fargo 1176 3831 479 10.45 2.46
UPS 2 272 1 274.00 2.00
Bank of America 489 6316 314 21.67 1.56

Some Definitions

Error
In this context, an “error” is something that was found using a test which us clearly ‘pass/fail’ in nature. Things such as missing alt attributes for images fall into this category.
Warning
In this context, a “warning” is something that was found using a test which does not have a clear ‘pass/fail’ criteria but would instead require human inspection to verify.
I’m available for accessibility consulting, audits, VPATs, training, and accessible web development, email me directly at karl@karlgroves.com or call me at +1 443-875-7343