If you want a page image, then use and drag the mouse over what you want to save into the paste buffer.
Open an editor (like MS Word, or Word-Pad, or Paint) and paste the image into it.
Then save.
If you want the text and the PDF is in text format, Highlight what you want and paste it into Word or Word-Pad and save.
Also, you have to open the PDF with the appropriate PDF file format, and the PDF specification does not specify this. So, if you're going to open a PDF without knowing how the PDF file format looks like, you might as well write your own “PDF file format parser”, because you already know that the way to read a PDF with a program is to parse it and read the bytes. I'm using Notepad++ as the PDF editor today, or the Windows text editor, which I can do this because it is not restricted by a PDF specification. You can have a PDF file editor available to you if you want, and if you know how to make it a very convenient application, but for now, you better just use notepad++ to do whatever you want. In particular, if you're going to read PDF images or images formatted with CSS, you're.