Contents of What Makes a PDF Document Accessible?

What Makes a PDF Document Accessible?

Has Tags.
Tags are in a logical reading order for the content.
Tags are correct for the content (for example, a list is within a list structure, a table is within a table structure).
The PDF has a core language attribute and if the document is multilingual, the appropriate language for the text has been identified.
The Tab Order for links and form controls is correct.
Images and links have Alt Text.
Lists are tagged correctly.
Tables are tagged correctly.
Paragraphs are tagged correctly.