Based on an article previously written and published by Pete LePage.
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On desktop, there's typically no indication to a user that a Progressive Web App is installable, and if it is, the install flow is hidden within the three dot menu.
In Chrome 76 (beta mid-June 2019), Google Chrome will make it easier for users to install Progressive Web Apps [PWAs] on a PC or desktop by adding a visible install button to the user interface, specifically the address bar (omnibox).
If your site meets the criteria, Chrome will automatically show an install icon in the address bar whenever someone visits the website. Clicking the button prompts the user to install the PWA as desktop application.
