title: Php Convert PNG to SVG with ImageMagick
body: <p>I want to convert PNG files to SVG format with PHP and ImageMagick. </p>
  
  <p>My PNG files background are transparent and colors are black. So there is an color shape (black). 
  I used this code "convert a.png b.svg" on terminal but, converted file's size very big. (9 MB ~). My png's size is only 16 KB.</p>
  
  <p>How Can I convert PNG to SVG with other method ?</p>
  
  <p><em>[NOTE !]: I don't want to convert SVG to PNG !!!</em></p>
  
  <p>Ex. My PNG file: 
  <img src="https://i.stack.imgur.com/xayzy.png" alt="enter image description here"></p>