To download and convert .md files from GitHub into .pdf files, you can follow these steps:

1. Download the .md file from GitHub: Go to the GitHub repository, navigate to the file you want to download, and click on the "Raw" button. This will download the file as a .md file.
2. Use a Markdown editor or converter: You can use a Markdown editor like Typora or Visual Studio Code with the Markdown PDF extension to convert the .md file to a .pdf file. Alternatively, you can use online tools like PDFCreator Online or MD to PDF Converter to convert the file.

Typora Method: You can use Typora to convert the .md file to a .pdf file. After installing Typora, simply open the .md file and click on the "Export" button to export it as a .pdf file. [2]

Online Tools Method: You can use online tools like PDFCreator Online or MD to PDF Converter to convert the .md file to a .pdf file. These tools allow you to upload the .md file, select the output format, and download the converted .pdf file. [1]

GitHub to PDF using gh-md-to-html: You can also use the gh-md-to-html command-line tool to convert the .md file to a .pdf file. This tool converts the .md file to an HTML file and then uses wkhtmltopdf to convert the HTML file to a .pdf file. [3]

Example using gh-md-to-html:

gh-md-to-html MANUAL.md -o example13.pdf

Note: This command assumes that you have the gh-md-to-html tool installed and that you want to convert the MANUAL.md file to a example13.pdf file.