title: How to install libpng-dev on windows?
body: <p>I am trying to install the imagemin-pngquant module for node :</p>
  
  <p><a href="https://www.npmjs.org/package/imagemin-pngquant" rel="noreferrer">https://www.npmjs.org/package/imagemin-pngquant</a></p>
  
  <p>However, when I run the command </p>
  
  <pre><code>npm install imagemin-pngquant --save-dev
  </code></pre>
  
  <p>I get the below error:</p>
  
  <pre><code>  warn : pngquant pre-build test failed
    info : compiling from source
   error : Error: pngquant failed to build, make sure that libpng-dev is installed
   at ChildProcess.exithandler (child_process.js:637:15)
   at ChildProcess.EventEmitter.emit (events.js:98:17)
   at maybeClose (child_process.js:735:16)
   at Socket.&lt;anonymous&gt; (child_process.js:948:11)
   at Socket.EventEmitter.emit (events.js:95:17)
   at Pipe.close (net.js:466:12)
  </code></pre>
  
  <p>How can I install the libpng-dev library that pngquant requires?</p>