title: html5 input file auto save
body: <h1>Background</h1>
  
  <p>I made a web app based on React.
  I allowed users to upload their picture by <code>&lt;input type="file"&gt;</code>.
  And if they click a button, browser shows some options</p>
  
  <ul>
  <li>Take picture or video</li>
  <li>Gallery</li>
  <li>Explore...</li>
  </ul>
  
  <p>And users click the [take picture or video] button then, default camera app is opened. This is normal process as you know.</p>
  
  <h1>Problem</h1>
  
  <p>If they take picture in a browser, it isn't saved into their gallery. I think browser disallow it for security.</p>
  
  <p>But, I want to make their smartphone <strong>save the picture into their gallery</strong> that they take right before automatically.</p>
  
  <p>Is this possible?
  Or should I make a native-app to make this?</p>