I'm currently working with some
PDF forms downloaded from official agencies.
To my dismay, my regular PDF readers, such as KPDF and the like can only read them but are unable to write on the predefined fields.
Previously, I've successfully used flpsed to insert words on PDF files. However, in this case flpsed cannot import the PDF forms.
Grudgingly, I'm going to install Acrobat Reader, which apparently is the only one that can handle these PDF forms.
Questions:
- In what sense are PDF forms different and not amenable to regular Open Source readers?
- Is there any other Open Source alternative to handle them?