I am using FastReports, and its resulting PDFs cannot be read correctly on iOS. Because iOS reads PDF/A, which FastReports doesn't support. This is apparently a known bug in FastReports 4.0, and it will be fixed in FastReports 5.0. However, 5.0 is a long way away, and has been in development for years by now.
So my simple solution - and I'd prefer a simple as possible solution, so I can remove it again once FastReports 5.0 is out - right now is to simply print the existing PDF to another PDF. Can this be done without installing a PDF printer on the system and just use Delphi?
And if not, is there a converter that accepts PDF files and outputs PDF files?
Try using SynPDF. It's open source, and its results are good, while managing file size to a very acceptable level. It produces PDF/A docs.
A Fast Report export unit can be found in the following location: