title: How to save a png from javascript variable
body: <p>I have an image encoded in base64 in a javascript variable : <code>data:image/png;base64, <em>base64 data</em></code></p>
  
  <p><strong>[EDIT]
  I need to save that file to disk without asking to the visitor to do a right click
  [/EDIT]</strong></p>
  
  <p>Is it possible ? How ?</p>
  
  <p>Thanks in advance</p>
  
  <p>Best regards</p>