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BrowserConfig

Browser configuration files (also known as browserconfig) can be used to define pinned site customizations, such as tile backgrounds, badge updates, and tile notifications. Browser configuration files let you set these customizations using external XML files rather than metadata within the HTML markup of a webpage.

https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/platform-apis/dn320426(v=vs.85)

From Microsoft: https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/platform-apis/dn320426(v=vs.85)

Copied from Gab: view-source:https://gab.com/browserconfig.xml