imagemagick - identify: Postscript delegate failed `filename.pdf': rKkP.cache @ error/pdf.c/ReadPDFImage/638

Question

I am facing an issue in generating thumbnails from a pdf file. I am using paperclip for this. Output of the identify command is below:

identify: Postscript delegate failed `filename.pdf': rKkP.cache @ error/pdf.c/ReadPDFImage/638.

Any suggestions on this issue?

Answer 1

ImageMagick only process raster image files, it cannot natively read and interprete PDF or PostScript files.

It needs Ghostscript as its delegate to read and convert these formats to images.

Therefor you need to install Ghostscript, before the processing of PDF or PostScript files by ImageMagick and Paperclip can start to work.