Botty takes a whitelist of URL's and allows to you view them as if you were a Google Bot.
Image from store
(2020-01-15) Shaun: Terrible.
(2019-02-17) Szabo Istvan: Don't know how to use it.
I get Can't read site's data, and there's no information about it
(2019-01-23) DIEGO DA SILVA SOUZA: parabéns
(2016-03-01) A F: Did not work on Chrome Version 48.0.2564.116 (64-bit) on Mac OSX 10.11
To confirm, I edited the Botty settings to add a few sites and watched the network traffic with Charles. It never changed my user agent.
(2016-01-17) Tony Yau: Don't know how to use it. No readme no plugin buttons, nothing. removed.