The Superposition desktop app intelligently parses your web page for colors, font styles, images and more, then makes them available for export as CSS, SCSS, JavaScript, Android XML and lets you use it directly in Design tools like Figma.
To use with Figma, open Superposition and go to the URL you want to get design tokens from, then open the plugin in Figma. The plugin will be kept up-to-date with the app as long as the app is open.