Download Lightkey chrome extension. Lightkey - Predictive Typing for Gmail, WhatsApp Web, LinkedIn Messenger, Slack, YahooMail And OutlookMail and install in your Google chrome browser. This is Direct Lightkey Crx download for Chrome it is also called Lightkey offline CRX for chrome Download. This Lightkey is used to Lightkey - Predictive Typing for Gmail, WhatsApp Web, LinkedIn Messenger, Slack, YahooMail And OutlookMail