You can use Boxoft Screen OCR to extract words information from protected web page with character. to your incredible, it enables you capture any area on your screen, recognize every character then save as TXT file. you can capture text from anywhere on the screen, including areas that you can't highlight with mouse, such as protected web pages, PDF file, dialog box and error message, etc.
Follow easy steps below:
Launch it by double click its desktop icon;
Select a kind of language which you want to extract;
Set a hotkey to later cut PDF area out conveniently;
Click "Capture" or use "Hotkey" to select an PDF area with words which belongs to slected language from your screen by mouse;
Click "OCR", then edit text in the popup edit box;