I maintain a browser extension for saving quoted text or just the page URL in markdown. I made it for my own use of Logseq, but it's useful for anything that uses markdown.
Chrome: https://chrome.google.com/webstore/detail/link-md/nfjkoojhgklbbnlonpdplbdjkgoemgod
Firefox: https://addons.mozilla.org/en-US/firefox/addon/link-md/