title: Write text on existing PNG with Node.js
body: <p>I'm trying to create a simple dynamic-badge (png) to embed in static pages to let know the status of my application.</p>
  
  <p>I'd like so to use an existing PNG image and write on it some text with Node.js.<br>
  I've found lot of libraries but all of them use Imagemagick or Cairo as native dependencies, I'd like to avoid to install anything else on the server.</p>
  
  <p>I've then found lwip, but I can't really understand how to write text on an image with it. How can I do?</p>