title: What is best format to use images (png,jpg) in iOS?
body: <p>I'm using a background image, and I would like it to weigh little without losing quality.</p>
  
  <p>I found this option in Xcode.</p>
  
  <p><code>Project-&gt; Packaging -&gt; Compress PNG Files</code></p>
  
  <p>This would help me to improve file sizes?</p>