gitlab.com/stone.code/pdfwriter (go): Package pdf provides a mid-level generator for PDF documents.  The goal is to provide an API at the same level of abstraction as PDF documents themselves.  The document structure can be defined, as well as adding pages with text, graphics, and annotations.  The coordinate system used is based on the native format for PDF documents. Although scaling transforms are possible, all distances and dimensions are specified in points (1/72 inch).  The origin for the coordinate system is in the bottom left corner.  Low-level primitives (such as described in section 3 of the reference) will not be exposed.  ISO 32000-1 Document management -- Portable document format -- Part 1: PDF 1.7
Keywords: go|pdf