title: Convert multiple PDF/PNG files to SVG files for Android app development
body: <p>I have an iOS app which is already out on the App Store and currently developing Android version for it.</p>
  
  <p>I made hundreds of PDF/PNG images for the iOS apps, and I do not want to conver them to SVG files one by one.</p>
  
  <p>Is there any good tool to convert multiple PDF/PNG files to SVG files?</p>