Giving PWA icons transparent backgrounds

 I changed some of my icons to have transparent backgrounds. These were the icons mentioned in the 'manifest' files of my Progressive Web Apps (PWA).


I had given the icons white backgrounds to make them clearer as recommended by the PWA tutorial on Google's 'web.dev'. But these looked strange next to other icons on a Windows desktop.


I made all my web pages PWA's by adding a 'manifest' file and starting a 'do-nothing' service worker. Chrome warns that loading these service workers slows things down.


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