WebAIM - Web Accessibility In Mind

E-mail List Archives

Re: Character limit on alt-text in PDF?

for

From: McMorland, Gabriel
Date: Jul 1, 2013 8:28AM

We sometimes need long descriptions to describe complex diagrams, flowcharts, or maps.

I'm not running into a technical character limit, but I'm interested in design choices others have made.

-----Original Message-----
From: <EMAIL REMOVED> [mailto: <EMAIL REMOVED> ] On Behalf Of Olaf Drümmer
Sent: Friday, June 28, 2013 4:03 PM
To: WebAIM Discussion List
Subject: Re: [WebAIM] Character limit on alt-text in PDF?

Hi Gabe,

there is no strict limit. Some will assume that having an alt text longer than 32 kilobytes (32767 bytes) might not be a good idea.

What kind of limit are you running into? Why would you have to have a very long description to begin with?


Olaf


On 28 Jun 2013, at 20:43, McMorland, Gabriel wrote:

> Is there a character limit on the alt-text for images in PDFs?
> If not, then how long is too long?
>
> Also, where do you usually put long descriptions for complex images in PDFs hosted on a website? If it was HTML I could use longdesc, but I'm not sure where to put them with the PDFs used in our online courses.
>
> Thanks for your thoughts,
> Gabe
> > > list messages to <EMAIL REMOVED>