I would like to using Carrierwave+Minimagic to create pdf thumbnail, just like you have shown for Jpeg. I was wondering if you can help me.

Posted almost 4 years ago by Vishwanath
Posted almost 4 years ago by Alex Yang

What have you tried already? You should give the solutions in this Stack Overflow post a try:
http://stackoverflow.com/questions/11897735/how-to-create-thumbnail-for-first-pdf-page-with-carrierwave

Remember that if you want to attach a PDF with a cover page thumbnail, you'll need to set up carrierwave for two separate file attachments.

1