OfflineSkins Mod 1.11.2, 1.10.2, 1.9.4 allows you to show off your skins even if the server is in offline mode. In case of your normal skin doesn't load, you can add your/others skin in the generated folder (.minecraft/cachedImages/skins), named after your username and ends with .png. This way the mod will use the provided file to load a skin for your/others character.

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