Some awesome help on this thread, thanks guys, just one question: if I have a pdf file on my android phone and wish to turn it into a fill-able form which I can then fill in with Fill and Sign PDF, how do I do it?
Arguably the best way is to use Adobe Acrobat, the company and software which created the PDF format. There is alot of help how to do this in Acrobat, a Youtube search would give you alot of tutorials.
If you do not have Acrobat, can't get, don't want to buy it, get a freeware program here:
There's a link under 'Specific Tools' for 'Make Fillable PDF Forms.'
I'm still working on the perfect Android solution and I will keep this updated.
Thanks for the qPDF info. I don't know that one.