When using the PDF24 PDF to PPTX tool, the issue arises that there is no possibility to convert multiple PDF files at once. Although the tool is capable of handling a wide variety of different file sizes, regardless of the device or operating system used, the option for batch conversions is missing. This means that users are forced to convert each PDF file individually into the PPTX format, which can be especially time-consuming when dealing with a large number of files. The missing function therefore significantly impairs the tool's efficiency. Additionally, users might be concerned about the security of their files, as a separate online transmission is required for each individual conversion.

The developers of the PDF24 PDF to PPTX tool could release an update that introduces a feature for bulk conversions. This would allow users to select multiple PDF files at once and convert them to the PPTX format. This would significantly speed up the process and improve the efficiency of the tool. In addition, the tool could be optimized to convert the files in a single secure online transmission to minimize users' concerns about the security of their files.