To get formatted information (like conjugation charts) from a website onto your Anki flashcards, I'm not copying the text; I'm taking a screen-grab.
On a Mac, the default command is Command-Control-Shift-4. There's an article on this over here: https://www.itg.ias.edu/content/keyboard-shortcuts-capture-screen-shot-mac-os-x
For Windows, there's a shortcut called the Snipping Tool. A reader discussed that tool over in our forums, here: https://fluent-forever.com/forums/topic/snipping-tool-windows/
Note: [Same answer, different question: How do I take screenshots of a small part of a website and put it on my Anki flashcards?)