title: Using convert options for ImageMagick in rails
body: <p>Working on a project that will allow conversion of an uploaded pdf to png. Here's what I've got so far:</p>
  
  <pre><code> class MyModel &lt; ActiveRecord::Base
  
            has_attached_file :attachment1, 
               styles: { image: ["1125x1500", :png] }, 
               default_url: "/images/missing.png", 
               :convert_options =&gt; { density: "1050", quality: "1050" }
  
  {other stuff}
  end
  </code></pre>
  
  <p>The <code>convert_options</code> doesn't seem to be working, as adjusting the density and quality seem to make no changes in the image.  I fear I'm not using correct syntax here.  </p>