Question: I am trying to use the decompressor on existing PDF files.  I receive a message indicating: “Cannot open file …” on any PDF file not created by PdfCompressor.  Does the decompressor only work on PdfCompressor created files, or is it looking for other characteristics in the PDF File? I am using PdfCompressor Version 4.0.135 – Evaluation Copy.

Answer: PdfCompressor only decompresses files that have been previously compressed by PdfCompressor. However, we do have a hidden flag that you can use “-convertall” that you can add to the command line in the decompressor that will allow you to decompress all files, even the ones that you didn’t create using PdfCompressor.