I have a problem using ConvertApi.com PowerPoint2Pdf conversion, when uploading files that are larger than 9MB. I can upload at least 43MB PowerPoint files through the browser f
The problem seems to be caused by using the secure https://
form of the URL (which is found here), instead of the non secure http://
form (such as the one used here). So the form of the command as shown in the question actually works correctly:
curl -v -F file=@"filename.pptx" http://do.convertapi.com/PowerPoint2Pdf?apikey=YourApiKeyHere > output.pdf