We try to offer all new own PDF documents in accessible form. This means that screen readers can read them aloud without any problems. We cannot subsequently revise older PDFs, they are usually not accessible. Likewise, PDFs from other providers that we link to are often not accessible.
As things stand, not all video and audio files in our media library on YouTube are provided with subtitles or transcriptions. YouTube offers the option of activating automatically created subtitles, but these do not always accurately reflect the content.
Individual content elements used have fixed heading levels that do not always fit the hierarchy of the rest of the page or skip individual levels. These modules are currently being revised.