Here is a list of awesome npm packages I have used, kept here for future reference. PDF package description pdfkit a nice pdf generation library for Node and the browser markdown-pdf a CLI tool to generate pdf from markdown, using PhantomJS Captcha package description projects that use the package svg-captcha a pure JS library to generate captcha in SVG format captcha-provider Documentation package description projects that use the package swagger-jsdoc reads your JSDoc-annotated source code and generates an OpenAPI (Swagger) specification captcha-provider swagger-ui-express serve auto-generated swagger-ui generated API docs from express, based on a swagger.json file captcha-provider