Genius Blocker is a piece of Rack Middleware designed to prevent unwanted annotations by News Genius.

The middleware injects a small bit of JavaScript code into the <head></head> of a website in order to force a redirect to the original website whenever anyone attempts to prepend onto a website's URL for annotation purposes.


Add this line to your application's Gemfile:

gem 'genius-blocker'

And then execute:

$ bundle

Or install it yourself as:

$ gem install genius-blocker


For most applications, you can insert middleware into the file in the root of the application.

A simple in a Rails application might look like this after adding Genius::Blocker:

require ::File.expand_path('../config/environment',  __FILE__)

use Genius::Blocker
run MyRailsApp::Application


Bug reports and pull requests are welcome on GitHub. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct. Any pull requests or issues that do not adhere to these guidelines will be ignored and/or deleted.


The gem is available as open source under the terms of the MIT License.