Flutter creat pdf file with different page size and font size
I recommend you to update to the latest version pdf: ^1.4. as a lot has changed on how to build a pdf.
- For the format size I would try PdfPageFormat.undefined or in your case PdfPageFormat(75, double.infinity)
- For the multiline with different size I would use the new way of creating a pdf that uses widgets. See the example:
https://github.com/DavBfr/dart_pdf/blob/master/pdf/example/main.dart
As simple as
pdf.addPage(Page( pageFormat: PdfPageFormat.a4, build: (Context context) { return Center( child: Text('Hello World', style: TextStyle(fontSize: 40)), ); // Center })); // Page