ente/auth/docs/adding-icons.md

Icons

Ente Auth supports the icon pack provided by simple-icons.

If you would like to add your own custom icon, please open a pull-request with the relevant SVG placed within assets/custom-icons/icons and add the corresponding entry within assets/custom-icons/_data/custom-icons.json.

This JSON file contains the following attributes:

Attribute	Usecase	Required
title	Name of the service.	Yes
slug	If the icon's SVG file has a name different from the title	No
hex	Color code for the icon	No
altNames	If the same service goes by different names or has different instances (eg. Mastodon)	No

Here is an example PR.