Post #1910478

One week ahead of its announced deadline for major institutions to make all online content meet WCAG 2.1 A/AA accessibility standards, the US government has kicked the can down the road instead, extending the deadline to April 26, 2027: https://www.govtech.com/policy/federal-accessibility-deadline-will-be-delayed-one-year Although I was more or less on top of getting my 1600 pages of old university-hosted html content accessible, I also have a couple hundred old pdf files (for instance of papers and talk slides) that are difficult to convert, and are fortunately grandfathered by the requirements. Nevertheless I would like to make them as accessible as possible, eventually. I have found that it is often possible, if tedious, to convert old pdf files to tagged and alt-textified pdf within Acrobat. However, I have hit a roadblock with some old pdf files, consisting purely of vector graphic artworks with no text. The accessibility checkers all suspect that these are secretly "image-only pdfs", scans of text that need OCR to make them accessible to non-sighted readers. They are not scans. They are not written in any language. They are purely vector graphics. It does not work to add tags labeling them as figures, to add alt text to the figure tags, nor to set the document language to "None": the accessibility checkers are still convinced that there must be secret hidden text somewhere in all that line art and complain that I haven't told them what that supposed text says. Does anyone know how to tag or otherwise annote these files with the information that they contain no text in a way that will make the accessibility checkers shut up about them?