I need to fill up a pdf with XFA forms. Okular says that or does not support XFA forms.
Xreader displays the following message and asks to install Adobe Reader.
If this message is not eventually replaced by the proper contents of the document, your PDF
viewer may not be able to display this type of document.
Is there pdf reader (not a pdf editor which actually draws on the document) in Ubuntu that supports XFA forms?
This is not a duplicate of Is there software that can fill PDF forms? because answers in that question do not address XFA forms (as mentioned in some comments).
Non Free software
I was searching for the same thing and came across this answer at Stack Exchange:
The accepted answer to download and install Master PDF editor worked for me.
Free Software
Support for XFA forms was recently implemented in mozilla/pdf.js. It would be available in Firefox 91 onwards.
This part of the answer was written before Firefox 91 was released.
about:config
and setpdfjs.enableXfa
preference to true.