Clean Copy is a lightweight Extension designed to enhance your browsing experience by ensuring you copy exactly what you see on a webpage—no more, no less. Many websites automatically append extra text, such as source links, copyright notices, or promotional content, when you copy text. Clean Copy prevents this by intercepting the copy action and placing only the selected text into your clipboard, giving you a clean and hassle-free copying experience.
https://sites.google.com/view/cleancopy-privacy/