Page-basis PDF2PNG converter for Firefox.

firefox-image-pdf-2-png.js

// Note: the PDF must be image-based. Makes it not generic, but very usefull in some situations.
// Put this in the console:
// EXE: (function (pageId) { ... })("page3");
;(function(pageId = "page1") {
	const canvas = document.getElementById(pageId)
	const image  = new Image()

	image.src = canvas.toDataURL("image/png")

	document.body.innerHTML = null
	document.body.appendChild(image)
})(/* Indicate page id (as "page#") here */);