Print OpenAPI 
This tool takes an OpenAPI file and spits out a printable, static HTML file. Since most browsers have a 'Print to PDF' function, you can use this to generate nice PDFs of your OpenAPI specs.
Why?
Most OpenAPI tooling focuses on creating fancy displays that you can click on, send API requests with, etc. But sometimes you just need a plain, easily-readable, and static copy of your API docs. We needed that here at Sendle for our internal documentation, so we built this tool!
How?
The tool uses the OpenAPI tooling released by ReadMe. Go check them out if you're after a nice developer hub – their offering is pretty cool!
Installation
$ npm install -g print-openapi
Usage
$ print-openapi export-html bbs-openapi.yaml bbs-openapi.html
Generate a printable HTML file from the bbs-openapi.yaml OpenAPI file, including all paths and pages.
$ print-openapi export-html --tag moderation bbs-openapi.yaml bbs-moderation-openapi.html
Generate a printable HTML file from the bbs-openapi.yaml OpenAPI file, only including paths and pages that have the moderation tag.
$ print-openapi deref --tag system-messages --tag sysmsgv2 bbs-openapi.yaml ../sysmsg.openapi.json
Create a new OpenAPI file called sysmsg.openapi.json. This file only contains the paths and pages from bbs-openapi.yaml with either the system-messages or sysmsgv2 tags.
Markdown pages
We've defined the x-pages extension, which lets you define arbitrary markdown pages to be displayed on the exported HTML files. See the bottom of that extension page for our future plans with it!
Tags
--tag and -t refer to the tags that can be assigned to OpenAPI operations, and to our custom markdown pages as defined our x-pages extension.
When using print-openapi, by default all pages and operations are exported. However, when tags are specified the tool will only include pages and operations with those tags. See the example specs in /examples/.
License
Released under the MIT license. See LICENSE for details.