alt tags on images?

[Peter Seibel]

Is there a way to add alt tags to images so we can be good accessibility citizens?

[Andrew Scholer]

Yes, see:
https://pretextbook.org/doc/guide/html/overview-images.html#overview-images-9

Andrew Scholer (he/him/his)

Computer Science Instructor

Chemeketa Community College

503.589.7649 

computerscience.chemeketa.edu/people/andrew-scholer/

On Fri, Jul 18, 2025 at 11:58 AM Peter Seibel <peter...@berkeley.net> wrote:

Is there a way to add alt tags to images so we can be good accessibility citizens?

--
You received this message because you are subscribed to the Google Groups "PreTeXt support" group.
To unsubscribe from this group and stop receiving emails from it, send an email to pretext-suppo...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/pretext-support/f93b949c-0033-4d22-aca6-be4314742201n%40googlegroups.com.

[Peter Seibel]

Ah, thanks. Our rst -> PreTeXt conversion had preserved the alt tags from our images but I noticed they didn't do anything in PreTeXt. I didn't think to look for a child element to do the same thing.

You received this message because you are subscribed to a topic in the Google Groups "PreTeXt support" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/pretext-support/-7-jyIdDFo0/unsubscribe.
To unsubscribe from this group and all its topics, send an email to pretext-suppo...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/pretext-support/CACm44N-bqQKe6tiYWYe1P8T4pXUwKneoghunSHnQe1cReSctog%40mail.gmail.com.

--

BHS Bell Schedule app: https://gigamonkeys.com/misc/bhs/

[Sean Fitzpatrick]

We can even do better than alt tags. The short description will give you an alt tag, but this is often not enough (e.g. if you need to describe a graph to a calculus student) so there's also the long description.

To view this discussion visit https://groups.google.com/d/msgid/pretext-support/CAMiqbm%3DRPLp_R5J2tLHVBkJh4MTxOT1_W60TJ5n%3D71_VkfVfeA%40mail.gmail.com.

[Peter Seibel]

How does that show up in an HTML book?

To view this discussion visit https://groups.google.com/d/msgid/pretext-support/CAH%2BNcPbLxOFCpcF3WfkzabnYxcHeXgGpC%3DjjjKQD%2BMa2hqP8pw%40mail.gmail.com.

[Sean Fitzpatrick]

As an info button. See here, for example: 

https://opentext.uleth.ca/apex-calculus/sec_ABC.html#ex_abc1

If you author <description> with plain text, I think there's some backwards compatibility to turn it into <shortdescription>.

But as soon as you put a <p> inside it becomes a long description.

To view this discussion visit https://groups.google.com/d/msgid/pretext-support/CAMiqbmkPNdg40CK8iuNsK7%3DsHN1QwVv0cL%2BXoRE3aEQPW_WKRA%40mail.gmail.com.