psutils

extractres does not alter the %%DocumentSuppliedResources comments.

psutils 3.3.8                                      2025-02-15                                         PSUTILS(1)

extractres extracts resources (fonts, procsets, patterns, files, etc) appearing in a PostScript document,
       and  puts  appropriate  %%IncludeResource comments in the document prologue.  The extracted resources are
       written to files with the same name as the resource, and an appropriate extension.  The pipeline

              extractres file.ps | includeres >out.ps

       will move all resources appearing in a document to the document prologue, removing redundant copies.  The
       output file can then be put through page re-arrangement filters such as psnup or pstops safely.   Extract
       resources from a PostScript document.

       INFILE `-' or no INFILE argument means standard input

       OUTFILE
              `-' or no OUTFILE argument means standard output

       psutils

-m, --merge
              merge resources of the same name into one file (needed e.g. for fonts output in multiple blocks)

       -v, --version
              show program's version number and exit

       -q, --quiet
              don't show progress

psutils [OPTION...] [INFILE [OUTFILE]]