Convert PDF to Image with Dragonfly and Rails

Converting a PDF to an image using Rails and Dragonfly is actually quite simple. Check it out.

With other uploaders in rails, it's not super straightforward to convert a PDF to an image. But, by using Dragonfly's ImageMagick plugin, it's real simple.

Make sure you're using the ImageMagick plugin.


Dragonfly.app.configure do
plugin :imagemagick

And you'll want GhostScript installed on your machine.

The markup for it, though is simple. If you want a small, 200x200 thumbnail of a pdf, it's as simple as the following.

<%= image.image.thumb('200x200#', :format => 'png', :frame => 0).url %>

Note: This assumes you have an image object that has an uploader mounted to an image accessor. You'll want to update to your application.


Let's Connect

Keep Reading

Connect to a Remote MySQL Database in Rails

Using a remote database with rails is useful for collaborating on projects or for keeping all your data in one place. Here's how to get it set up from scratch.

Mar 09, 2015

Rails has_many :through Polymorphic Association

How to maintain HMT behavior on a polymorphic association.

Oct 13, 2014

Run Multiple Rails Servers at the Same Time

It's annoying to shut down and start up your Rails server when jumping between projects. Learn how to run multiple servers at the same time.

Oct 24, 2014