Feature Requests item #4328, was opened at 2011-03-10 13:24 Status: Open Priority: 3 Submitted By: Jens Mueller (jens) Assigned to: Nobody (None) Summary: Avoid the generation of /ID optionally Category: PDF generation Group: v1.40 Resolution: None Initial Comment: pdftex will always set /ID in the file trailer. But setting it is optional, if /Encrypt is not set (see section 7.5.5 in ISO 32000-1; can be obtained here http://www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf) Because /ID is always set it will change for each run because the current time is used for generating it. This can be annoying because it makes regeneration of the very same PDF (looking at the file contents) very difficult (see e.g. http://superuser.com/questions/130347/how-do-i-produce-bytewise-consistent-d...). I suggest to add a flag to pdftex that allows to disable the generation of \ID. Something like [-no]-id=<value> to disable the generation of \ID or specifying the value on command line. ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=496&aid=4328&group_id=106