In many web-sites, you can't copy text by preventing Right-Clicks or Mouse-Drag on web pages. 

How to Extract Text from Web pages?
How to Text copy a disabled selection or right click site?

This program is designed to extract and copy only text with a click or two.

Web Page Text Viewer and Web Plain Text Copy Enabler.

Mara Copy : http://bit.ly/2z06M0J_MaraCopy
(This is a Google Chrome Browser Extension program.)

Ex) Google News Site (https://news.google.com/), 
Subject Text (Hyper Link) cannot mouse drag (can't block selection).
 

If you want to drag the text, Only Click the Mara Copy icon.
Next, You can drag the text a Popup window.

 

Mara Copy : http://bit.ly/2kWFN2D_MaraCopy
(This is a Naver Whale Browser Extension program.)