itnext.js

//https://itnext.io/javascript-convert-html-css-to-pdf-print-supported-very-sharp-and-not-blurry-c5ffe441eb5e

function print() {
		const filename  = 'ThisIsYourPDFFilename.pdf';

		html2canvas(document.querySelector('#nodeToRenderAsPDF')).then(canvas => {
			let pdf = new jsPDF('p', 'mm', 'a4');
			pdf.addImage(canvas.toDataURL('image/png'), 'PNG', 0, 0, 211, 298);
			pdf.save(filename);
		});
	}

// Variant
// This one lets you improve the PDF sharpness by scaling up the HTML node tree to render as an image before getting pasted on the PDF.
function print(quality = 1) {
		const filename  = 'ThisIsYourPDFFilename.pdf';

		html2canvas(document.querySelector('#nodeToRenderAsPDF'), 
								{scale: quality}
						 ).then(canvas => {
			let pdf = new jsPDF('p', 'mm', 'a4');
			pdf.addImage(canvas.toDataURL('image/png'), 'PNG', 0, 0, 211, 298);
			pdf.save(filename);
		});
	}