.NJ File

The nj file extension is related to the Nunjucks, a template engine for JavaScript.

The nj file stores template used by Nunjucks, stored in simple text file format. To work with *.nj files use Visual Studio Code with Nunjucks add-on.

How to open:

Use Visual Studio Code to work with *.nj templates.

How to convert:

There is probably no real way how you can convert this particular file type to anything else.