Yes you can. From October 2021 there's a dedicated html table import utility included with RGraph written in javascript. It uses the dom to get the data out of the page, parses it and then you can use an easy api to get to the data. Like the Google Sheets importer it works standalone without any other RGraph libraries so you can use it in your other, non-RGraph, projects if you want to. You can read more about the utility by reading the A utility to import data from an HTML table documentation.