The spec isn't, but you can make accessible PDFs. https://www.adobe.com/accessibility/pdf/pdf-accessibility-overview.html https://www.adobe.com/accessibility/pd

The spec isn't, but you can make accessible PDFs. https://www.adobe.com/accessibility/pdf/pdf-accessibility-overview.html https://www.adobe.com/accessibility/pdf/pdf-accessibility-ov... Accessible PDFs are also more easily machine readable.