I have a folder containing a bunch of ppts, each of which I'd like to convert to an individual pdf.
You can also use the command line of libreoffice for your purpose. This example converts all ppt-files in the current directory to pdf's:
libreoffice --headless --invisible --convert-to pdf *.ppt
Starts in "headless mode", which allows using the application without a user interface.
This special mode can be used when the application is controlled by external clients via the API...
It implies --invisible and strictly ignores any GUI environment.
Starts in invisible mode.
Neither the start-up logo nor the initial program window will be visible. LO can be controlled and documents and dialogs can be opened via the API.
When started with this parameter, it can only be quit using the taskmanager (Windows) or the kill command (UNIX based systems).
Get more information on command line options with:
(Note: You have to close all running instances of LibreOffice before the command line works.)
Note that the info in the web page is outdated. Use man or type
unoconv -h to get actual command line options. It works like this:
unoconv -f pdf presentation.odt
This command will create a presentation.pdf file.
I have only used it to batch convert ods to pdf and it works perfectly. I haven't tried it with presentations (but for a quick test now), but I expect that it will work nicely.
Note that it will not work on Lucid (10.04), because of a bug in the
python-openoffice biddings. If you need to use it on Lucid, you can add this ppa to your software sources to upgrade your Openoffice version.