This is a done by comparing the comments being stored in [Jason Baumgartner's](https://pushshift.io/) [Pushshift Reddit API](https://github.com/pushshift/api) and the ones from Reddit's API. The frontend, developed by Jesper Wrang and originally available at [removeddit.com](https://removeddit.com), is written in [React](https://reactjs.org/) and uses [Sass](https://sass-lang.com/) as the CSS Preprocessor.
Visit http://localhost:8080 and make sure the site is running. If you're getting connection errors to Reddit or Pushshift, it might be because you're running a VPN. Try turning it off for development.