Base64

Encode a file to base64

$ base64 filename > outputfile

Decode a base64 file:

$ base64 --decode filename > outputfile

Embed a base64 image

• in HTML

  <img alt="Embedded Image" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIA..." />
  

• in CSS

  div.image {
    width:100px;
    height:100px;
    background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIA...);
  }