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.