I need to include Adobe Acrobat converter - whether it's an add-on or plugin - so that I could convert the website content to PDF.
On Internet Explorer, there is an Adobe Acrobat icon which would allow the website's content to be converted to a PDF document. While I tried to import all features from IE to Firefox, that feature did not appear. That is so important to me that despite all advantages of Firefox I had to go back to IE.
Opaite Mbohovái (1)
I don't know whether anyone has created a PDF button for Firefox. What I do is print to PDF. After using Preview to confirm that it will fit, I print to a PDF printer driver. If you have Adobe Acrobat installed, this may show up among your printers as Distiller.
If you don't have Adobe Acrobat, there are a number of third party PDF printer drivers (free and paid) to choose from.