title: Data protocol URL size limitations
body: <p>Is there any size limitation for "data:" URL scheme
  values? I'm interested in limitations in popular web browsers. In other words, how long can <code>data:image/jpg;base64,base64_encoded_data</code> be in <code>&lt;img src="data:image/jpg;base64,base64_encoded_data" /&gt;</code> or <code>background-image: url(data:image/jpg;base64,base64_encoded_data)</code>?</p>