How to convert pptx files to jpg or png (for each slide) on linux?

Question

I want to convert a powerpoint presentation to multiple images. I already installed LibreOffice on my server and converting docx to pdf is no problem. pptx to pdf conversion

Answer 1

Not sure about libreoffice, but afaik its the only program to deal with pptx files.

I found this http://ask.libreoffice.org/en/question/23851/converting-pptx-to-pdf-issue/

If you have pdfs you can use imagemagick to output any quality pictures

Answer 2

After Installing unoconv and LibreOffice you can use:

unoconv --export Quality=100 filename.pptx filename.pdf 

to convert your presentation to a pdf. For further options look here.

Afterwards you can - as already said above - use:

convert -density 400 my_filename.pdf -resize 2000x1500 my_filename%d.jpg 

to receive the images.

Answer 3

Convertion PPTX to PNG/JPG

This solution requires LibreOffice ( soffice ) and Ghostscript ( gs )

sudo apt install libreoffice ghostscript

Then two steps:

1. PPTX -> PDF

soffice --headless --convert-to pdf prezentacja.pptx

2. PDF -> PNG/JPG

gs -sDEVICE=pngalpha -o slajd-%02d.png -r96 prezentacja.pdf

• -o slajd-%02d.png - output to file, %02d slajd number, two digits
• -r96 - resolution:
  • 96 -> 1280x720
  • 144 -> 1920x1080