Creating HTML OpenAPI Document from swagger files (yaml/json) on stand-alone environment.
This html file doesn't fetch any resources from the internet.
python swagger-to-html-standalone.py < /path/to/api.(yaml|json) > doc.html
FYI: making YAML 1.2 a superset of JSON. c.f. https://en.wikipedia.org/wiki/YAML
ALSO COPY CSS AND JS FILES distributed from Swagger not only HTML to show up the HTML API document correctly.