How to convert tiff images from RGB color to CMYK color on Linux?

I have a poster to be submitted to the publisher which requires image files in CMYK color. The file I already have is in RGB color. How to convert it on Linux? The convert tool from ImageMagick with option -colorspace to alternate image colorspace of images. The plain output with colorspace is quite large. So…

Good open-source and free scanner software for Windows?

Any suggestions on good open-source and free scanner software for Windows? NAPS2 (Not Another PDF Scanner 2) is my favorite opensource scanner software on Windows: http://naps2.sourceforge.net/ Scan documents to PDF and other file types, as simply as possible. NAPS2 is a document scanning application with a focus on simplicity and ease of use. Scan your…

How to convert .pptx slides to .jpg or .png images on Linux in command line?

How to convert .pptx slides to .jpg or .png images on Linux in command line? This following method works best for me. First, convert .pptx file to .pdf using libreoffice: libreoffice –headless –convert-to pdf file.pptx –headless makes libreoffice run in batch mode and not start the GUI. The pdf file will be named file.pdf by…