Controlling output pdf size when converting via command line

[hamish1]

I am writing a webapp and as part of it, I use libreoffice in headless mode to convert docx and pptx files to pdfs (for future processing). How can I set the page size of the output pdf to be the same as the size of the input docx/pptx? At the moment the output pdf is sometimes a different size, leading to the output pdf having some images cropped and a differing number of pages from the original image.

For reference, this is the command I am currently using:
libreoffice --headless --convert-to pdf:writer_pdf_Export --outdir output_dir input_path

Could I maybe run a command to get the page size of the input pdf and then set the output pdf to have this same page size?

Any help is much appreciated. Thanks!

[Wanderer]

@hamish1

output pdf is sometimes a different size

The crucial point may be to find out a reason for “sometimes”. Can you collect this files?

[mikekaganski]

tdf#162412

[mikekaganski]

Command line conversion is intended to create as close representation of the source as possible. All page sizes must be as in the DOCX/PPTX. If that’s not so, this is a bug, which needs to be filed, accompanied by a problematic DOCX/PPTX sample (of course, given that your problem is reproducible with current versions of LibreOffice).