Let's hexplore compression and ASCII Filters, classic or compressed XREF, standard or stream-ed objects, web optimization, incremental updates, and PDF structure manipulation.
00:00 start
01:29 Hello world
07:21 Prev object
11:23 PagedOut p16
12:57 Filters
15:41 making PDFs editable
20:46 Linearized (web-optimised)
24:16 ObjStm type
29:08 XRef type
42:10 Encrypt object
51:00 conclusion