pdftoimage¶ ↑

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PDFToImage is a ruby gem which allows for conversion of a PDF document into images. It uses poppler_utils to first convert the document to PNG and then allows usage of ImageMagick to convert the image into other formats.

The reasoning behind using poppler_utils is due to the fact that ghostscript occasionally has trouble with certain PDF documents which poppler_utils seems to be able to parse without error.

require 'pdftoimage'
images = PDFToImage.open('somefile.pdf')
images.each do |img|
  img.resize('50%').save("output/page-#{img.page}.jpg")
end

require 'pdftoimage'
PDFToImage.open('anotherpdf.pdf') do |page|
  page.resize('150').quality('80%').save('out/thumbnail-#{page.page}.jpg")
end

require 'pdftoimage'
PDFToImage.open('anotherpdf.pdf') do |page|
  # Set the resolution to 350dpi
  page.r(350).save('out/thumbnail-#{page.page}.jpg")
end

poppler_utils

ImageMagick

$ gem install pdftoimage

Copyright © 2023 Rob Flynn

See LICENSE for details.