html2canvas, Screenshots with JavaScript:

• https://html2canvas.hertzen.com

• More demos: https://html2canvas.hertzen.com/tests/

• https://github.com/niklasvh/html2canvas

• https://www.npmjs.com/package/html2canvas

• How to capture an iframe as an image: https://stackoverflow.com/questions/55389292/how-to-capture-an-iframe-as-an-image