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An educational chrome extension (and not a waste of time)
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Mind Matter

published version Chrome Extension license Build Status codecov Maintainability

Mind Matter is an educational Chrome extension that blocks blacklisted sites, granting access only if a trivia question is answered correctly. It deters excessive use of distracting websites while helping users to reinforce their knowledge.


Stable releases are published to the web store.

Available on the Chrome Web Store

Experimental versions are found on this repository's master branch. It can be installed as an unpacked extension.

GitHub manifest version

  1. git clone or Download ZIP and extract it.
  2. Go to chrome://extensions.
  3. Enable "Developer mode"
  4. Click "Load unpacked extension..." and select the mindmatter/extension folder. Google Chrome extensions page


Settings page Blacklist options page Question prompt Cooldown notification


The psychologist Daniel Kahneman describes two systems of thinking. According to Wikipedia, "'System 1' is fast, instinctive, and emotional; 'System 2' is slower, more deliberative, and more logical."

Surfing the Internet tends to be unproductive. The objective of Mind Matter is to disrupt cognitive ease and force users to perform system 2 thinking.


Thanks to Sally Zhao for the "brain in pot" logo.

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