I have extracted this from the open-source Extension Boilerplate project, Email This.

Side note: Do check out Email This. It is a simpler alternative to bookmarking tools like Pocket, Readability & Instapaper. Email This will remove ads & distractions from an article and send you a nice email with just the text/images. No need to install any additional applications or login to another app just to access your bookmarks. The Chrome Extensions is available on the Chrome Web Store.

In creating this project, open source code was taken from:

-https://github.com/EmailThis/extension-boilerplate for the icons, options.js, contentscript.js, popup.js and background.js in scripts, styles, options.html, README.md, LICENSE.txt, and .gitignore.txt.

-https://canvasjs.com/html5-javascript-bar-chart/ for chart.js in scripts and popup.html.

-https://canvasjs.com for canvasjs.min.js and jquery-3.5.1.min.js in scripts.

-https://stackoverflow.com for functions in the files attempt1_content.js, attempt1_content_simple.js, attempt1_background.js, and attempt1_background_simple.js in the scripts folder. The particular code used is documented within the comments.

-https://thoughtbot.com for functions in attempt1_background.js in the scripts folder, again with the specifics in the comments.

Again, more details are in the comments within the files.

This project is licensed under the MIT license.