I am using Mathematica 126.96.36.199 under German Windows 32bit. I am on trying to export and import German text to PDF and re-import it. It seems that there is a confusion about the character encoding. It obviously differs between
Import. However, nothing related to the encoding is described in the PDF documentation, nor does specifying
CharacterEncoding in PDF import and export seem to make any difference.
ImportString[ExportString[ "This is a string. Aber was ist mit äöü, ß und ÄÖÜ? Also x\.b2 und \y\.b3 measured in µm", "PDF"]]
I wonder if there is a work-around which doesn't require a complete re-mapping. PDF export is slow, and doing it character by character will probably take hours.