How to convert a .pptx to .pdf using Python

I believe the answer has to be updated because because comtypes doesn't work anymore.

So this is the code which works (updated version of the accepted answer) :

import win32com.client

def PPTtoPDF(inputFileName, outputFileName, formatType = 32):
    powerpoint = win32com.client.DispatchEx("Powerpoint.Application")
    powerpoint.Visible = 1

    if outputFileName[-3:] != 'pdf':
        outputFileName = outputFileName + ".pdf"
    deck = powerpoint.Presentations.Open(inputFileName)
    deck.SaveAs(outputFileName, formatType) # formatType = 32 for ppt to pdf
    deck.Close()
    powerpoint.Quit()

I was working with this solution but I needed to search all .pptx, .ppt, and then turn them all to .pdf (python 3.7.5). Hope it works...

import os
import win32com.client

ppttoPDF = 32

for root, dirs, files in os.walk(r'your directory here'):
    for f in files:

        if f.endswith(".pptx"):
            try:
                print(f)
                in_file=os.path.join(root,f)
                powerpoint = win32com.client.Dispatch("Powerpoint.Application")
                deck = powerpoint.Presentations.Open(in_file)
                deck.SaveAs(os.path.join(root,f[:-5]), ppttoPDF) # formatType = 32 for ppt to pdf
                deck.Close()
                powerpoint.Quit()
                print('done')
                os.remove(os.path.join(root,f))
                pass
            except:
                print('could not open')
                # os.remove(os.path.join(root,f))
        elif f.endswith(".ppt"):
            try:
                print(f)
                in_file=os.path.join(root,f)
                powerpoint = win32com.client.Dispatch("Powerpoint.Application")
                deck = powerpoint.Presentations.Open(in_file)
                deck.SaveAs(os.path.join(root,f[:-4]), ppttoPDF) # formatType = 32 for ppt to pdf
                deck.Close()
                powerpoint.Quit()
                print('done')
                os.remove(os.path.join(root,f))
                pass
            except:
                print('could not open')
                # os.remove(os.path.join(root,f))
        else:
            pass

The try and except was for those documents I couldn't read and won't exit the code until the last document. And I would recommend doing each type of format aside: first .pptx and then .ppt (or viceversa).

I found the answer with the help of this post and the answer from this question.

Note that comtypes is only available for Windows. Other platforms will not support this.

import comtypes.client

def PPTtoPDF(inputFileName, outputFileName, formatType = 32):
    powerpoint = comtypes.client.CreateObject("Powerpoint.Application")
    powerpoint.Visible = 1

    if outputFileName[-3:] != 'pdf':
        outputFileName = outputFileName + ".pdf"
    deck = powerpoint.Presentations.Open(inputFileName)
    deck.SaveAs(outputFileName, formatType) # formatType = 32 for ppt to pdf
    deck.Close()
    powerpoint.Quit()

Have a look at the following snippet. It uses unoconv and it's working ex expected on UBUNTU 20.04.

# requirements
# sudo apt install unoconv
# pip install tqdm
# pip install glob
import glob
import tqdm
path = "<INPUT FOLDER>"
extension = "pptx"
files = [f for f in glob.glob(path + "/**/*.{}".format(extension), recursive=True)]
for f in tqdm.tqdm(files):
    command = "unoconv -f pdf \"{}\"".format(f)
    os.system(command)

This snippet can be used for different-2 format conversion.

Original Snippet