There's a link to his github in the extension page. You can read his source code: https://github.com/OskarDamkjaer/FirefoxDelayWebpage https://github.com/OskarD

There's a link to his github in the extension page. You can read his source code: https://github.com/OskarDamkjaer/FirefoxDelayWebpage https://github.com/OskarDamkjaer/FirefoxDelayWebpage most of the relevant code is in https://github.com/OskarDamkjaer/FirefoxDelayWebpage/blob/master/delay.js https://github.com/OskarDamkjaer/FirefoxDelayWebpage/blob/ma...