The -info option prints entries from the document information dictionary to standard output.
The details of the format for creation and modification dates can be found in Appendix A.
By default, cpdf strips to ASCII, discarding character codes in excess of 127. In order to preserve the original unicode, sdd the -utf8 option. To disable all postprocessing of the string, add -raw.
The -page-info option prints the media box and other boxes page-by-page to standard output:
Note that the format for boxes is minimum x, minimum y, maximum x, maximum y.
The -pages operation prints the number of pages in the file.