I have the reporting set to check for alt text when I run accessibility checking. I have images that are missing alternative text that are not being flagged in the accessibility report. I'm getting a "Passed" on the report even though many images are missing alt text when I manually check the tags.
If I remove the tags that were created during the conversion to PDF (from Word 2007) and use the "Add Tags" command, I do get the flagging for missing alt text. Anyone else running into this? I couldn't find any other posts about it. I'm getting worried now that I'll have to start manually checking tags for alt text.
In my experience, the Acrobat accessibility checker is not very thorough. I have seen it pass many things that should have been flagged. I use it just as a quick first check. I find the free PDF Accessibility Checker (PAC) from the Swiss foundation Zugang für Alle (Access for All) to be very much more thorough. I use the PAC as my primary test tool for the portions of PDF accessibility testing that can be automated. PAC is free to download and use, although the good people at the foundation appreciate donations.
Thanks, I downloaded that and will see how it does. It's a little worrying though that Acrobat XI can improperly check a document.