Rob Sayre wrote:
[...]
<http://code.google.com/webstats/>
Is a good survey. Looks like there are a lot of alt attributes out
there. I wonder how many are empty, and how many are valid according to
the requirements in Hixie's draft (difficult to measure!)
From a different data set (the pages from dmoz.org about a year ago) I
got <http://philip.html5.org/data/alt-lengths.svg>, which shows
something like 43% of image elements having empty alt text.
http://lists.w3.org/Archives/Public/public-html/2008Apr/0536.html has
some more details.
From another different set (130K of the pages from dmoz.org about a
month ago (which reflects changes in its list of pages, more than
changes in the pages themselves)), 541634 out 1301287 image elements
(42%) have empty alt text, so it seems fairly consistent.
(I've never actually looked at any of these images, so I don't know how
many are valid.)
--
Philip Taylor
[email protected]
