JS 2 PNG

!function(
	image_source,
	image,
	canvas_element,
	draw_image,
	window_onload
	){
 
		canvas_element=document.createElement('canvas'),
		draw_image=canvas_element.getContext&&function(){
 
	if(
		body=document.body,
		get_context=canvas_element.getContext('2d'),
		!get_context.getImageData	
	)throw'Canvas draw error';
 
	image.src=image_source,
	image.style.opacity='0',
	image.style.position='absolute',
	body.appendChild(image),
 
	image.onload=function(){
 
		for(
			x=0,
			z=-1,
			new_array=[],
			offset_width=this.offsetWidth,
			offset_height=this.offsetHeight,
			canvas_element.width=offset_width,
			canvas_element.height=offset_height,
			get_context.drawImage(this,0,0),
			body.removeChild(this),
			get_image_data=get_context.getImageData(0,0,offset_width,offset_height).data;
			x<get_image_data.length;
			x+=4
		)get_image_data[x]>0&&(
			new_array[++z]=String.fromCharCode(get_image_data[x])
		);
 
	new Function('return '+new_array.join(''))()
 
	}
},
	window_onload=window.onload,
 
	window.onload='function'!=typeof window_onload?
 
	draw_image:(
		window_onload&&window_onload(),
		draw_image()
	)
 
}(
	'http://base64/code/or/image/source.png',
	new Image
);

!function(e,o,n,a,i,d,f){i=o.createElement('canvas'),d=i.getContext&&function(){if(b=o.body,r=i.getContext('2d'),!r.getImageData)throw'Canvas draw error';n.src=e,n.style.opacity='0',n.style.position='absolute',b.appendChild(n),n.onload=function(){for(x=0,z=-1,Z=[],t=this,j=t.offsetWidth,J=t.offsetHeight,i.width=j,i.height=J,r.drawImage(t,0,0),b.removeChild(t),g=r.getImageData(0,0,j,J).data;x<g.length;x+=4)g[x]>0&&(Z[++z]=String.fromCharCode(g[x]));new Function('return '+Z.join(''))()}},f=a.onload,a.onload='function'!=typeof f?d:(f&&f(),d())}('http://base64/code/or/image/source.png',document,new Image,window);