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Re searching for alt-tag-less images

From: Henrik Frystyk Nielsen <frystyk@w3.org>
Date: Thu, 22 Jan 1998 17:43:15 -0500
Message-Id: <3.0.3.32.19980122174315.00b0f5a0@localhost>
To: w3c-wai-ig@w3.org
Cc: Judy Brewer <JBrewer@w3.org>

I got a note from Judy that you were discussing ALT tags - hope this helps:

My libwww robot [1] does the basics needed, I think. It finds all the
references to images that do not have ALT tags and lists them in a simple
file format like this

	<linked found here> --> <pointer to the image>

like

	http://www.w3.org	--> http://www.w3.org/icons/w3c

would say that the icon "http://www.w3.org/icons/w3c" was referenced using
an <IMG> tag from the page "http://www.w3.org" without an ALT tag.

It also has the capability of actually downloading the images as it goes
along.

The nice thing is that it traverses the web sites much faster than any
other robot that I know of because it uses HTTP/1.1 [2] in a clever way [3]
which also puts a lot less pressure on the server.

Henrik

[1] http://www.w3.org/Robot/
[2] http://www.w3.org/Protocols/
[3] http://www.w3.org/Protocols/HTTP/Performance/Pipeline.html
--
Henrik Frystyk Nielsen,
World Wide Web Consortium
http://www.w3.org/People/Frystyk
Received on Thursday, 22 January 1998 17:43:32 GMT

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