Skin Fixer
In recent Minecraft versions, Mojang has discontinued support for the old skin loading API that was used in versions below 1.7. Because of this, player skins stopped displaying and instead show the default Steve skin. This mod solves this problem by redirecting Minecraft requests to the alternative Crafatar service, which successfully loads and displays skins.
This mod works only on the client side and is compatible with most modifications. It can be freely added to mod packs.