When converting very large documents, you may experience a problem with running out of memory.
This is generally a memory limitation imposed by the Operating System since memory allocation fails at about 1 gigabyte.
In order to ensure our software can remain compatible with older systems, PDF2XL is a 32-bit program, though it will run on a 64-bit system.
The Workaround
To successfully convert the document, it will be necessary to convert it in sections by using page ranges and converting to the existing sheet, or by selecting the Large Files Support option:
