Not working at all. There is such menu in Firefox now, so the add-on is useless.

Doesn't work with Firefox for Android.

Сохранило пулную чушь, просто набор случайных символов.

working fine if selecting only text, it doesn't work as expected with pictures and tables

根本不能用

This add-on scrambles Polish texts

The add-on prints Russian language incorrectly to PDF

all printed text is error code

why not support to print multi text parts

It works for English, but not works well for other languages. As I am a Chinese user, I tried Chinese sentences and Japanese setences and I only got garbled characters.
It seems this addon can only transfer word and serveral sentences to pdf. I tried to select whole paragraph and only got one page pdf with some sentences lost. Also pictures are missed. I wonder whether only a word or few sentences is enough for daily use.