The author of this article, Devin Rader, demonstrates how to create a simple web application that converts uploaded images into ASCII art using Node.js and Express. The application uses the `image-to-ascii` package to convert the image and the `PdfKit` package to generate a PDF from the ASCII text. Once the PDF is generated, it uses Twilio's Programmable Fax API to send the fax. The application also uses ngrok to expose the local machine to the internet, allowing Twilio to reach the PDF URL. The author provides step-by-step instructions on how to set up and run the application, including installing dependencies, creating a new Express app, and setting up the form for uploading images.