So I was able to get this working by checking the “synchronize content” flag in settings. But that appears to just copy my S3 documents back and forth into groupdocs storage. It appears that my S3 documents count against my GroupDocs quota. Is this true? Is there any way to pull documents for conversion directly from S3 without “synchronizing” them to groupdocs storage?
Thank you for interest in GroupDocs. In case using S3 storage GroupDocs uses mix of S3 and GroupDocs storages. That means that when you convert file which stored on your S3 storage this file will be taken from your storage and processed with GroupDocs server , after that converted file will be stored in GroupDocs storage.
Synchronization - it does not mean that we synchronize the contents. Synchronized only lists of files / directories, the files themselves are not downloaded.
As for GroupDocs quota – yes S3 documents count against your GroupDocs quota.
If you have any additional questions please feel free to get back in touch.