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If i am developing a web application that can be launched in standalone mode, you need to write manifest.json.

Therefore, you need to specify icons.

icon is displayed on the left side of the tab if it is displayed on a PC, or if it is a mobile device, it will be displayed when it is added to the home screen. I have seen ".ico" as the extension of the file.

When I looked into it, I found out that it was a file that could store multiple image sizes, but I felt that SVG would be fine.

What is the purpose and advantage of using "quote" .ico"files?

Thank you.

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