mutool
mutool
TLDR
Convert pages 1-10 into 10 PNGs (Note: %nd in the output placeholder must be replaced with a print modifier like %d or %2d)
$ mutool convert -o [path/to/output%nd.png] [path/to/input.pdf] [1-10]
Convert pages 2, 3 and 5 of a PDF into text in stdout
$ mutool draw -F [txt] [path/to/input.pdf] [2,3,5]
Concatenate multiple PDF files
$ mutool merge -o [path/to/output.pdf] [path/to/input1.pdf path/to/input2.pdf ...]
Query information about all content embedded in a PDF
$ mutool info [path/to/input.pdf]
Extract all images, fonts and resources embedded in a PDF out into the current directory
$ mutool extract [path/to/input.pdf]
Print the outline (table of contents) of a PDF
$ mutool show [path/to/input.pdf] outline