The Pdfalyzer is a comprehensive PDF internals visualization tool

[michelcrypt4d4mus]

The Pdfalyzer is a tool that shows you every property of every internal PDF object along with all the relationships between them in (sometimes enormous) very colorful tree diagrams.

Figured this was worth a post here because the unexpectedly (to me, at least) strong positive response from the developer community to the project made me realize that The Pdfalyzer is probably a useful tool for anyone who has to deal with the internal plumbing of the portable document format in any way, shape, or form, both on the reading side and on the generation/writing side.

Lots of enormous screenshots over at the repo. Also available on PyPi.