PostScript (.ps) versus Portal Document Format (.pdf) – from a users perspective

Generally, PS is pretty much a dead format today. The only time a user is likely to see significant amounts of it in my experience, is if they are dealing with quality printing. Reality is almost everything comes in PDF (or Word/Excell if from retards), and morons assume that Adobe Acrobat is the only reader for it. Most people don’t know that PS exists and to many are just to lost to figure out what a PDF is (ugh, grow up!). The simple facts:

  1. Post Script is text based
  2. PDF is a binary format annd offers some programmatic options where supported

Here is what makes that interesting! I have numerous files in PDF and PS formats. Most are under 5M and are PDF. Now there is a monster called that weighs in at a whopping 60M!!! My largest PDF files were around 12M to 16M. I’m compressing stuff I don’t use frequently but don’t want to erase for space reclaimation. So I compressed everything over 2M with XZ to see what files will compress enough to be worth having to uncompress them next century. Most PDF files contained a few embedded images, so savings were on average about 1M, e.g. 15M becomes 14M. Useless. A few files that were more exessive on text shrunk from between 3.5M and 4M to between 1.5M and 2M. That is nice but still to small to care about, because of the original file size. The 60M PostScript file compressed down to 1.6M!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Size checks were done using du -h and compression with xz -e. Being more textual and less binary, I infer that we can get better compression ratios out of Post Script than PDF. Although it is possible to make a PS file that is pretty binary for all practical intents and purposes. But that was surprising….lol. Post Script: In point in fact, I think the only organizations that I have ever seen acknolledge other PDF readers exist, have been Canadian govermenta, which even went so far as to note XPDF, an old choice among Linux/Unix users. +1 for the Blogger app for Android remembering what I started writing ages ago witout me even having to click a draft entry, hehehe.

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