Tools like Galaxy Swapper v2 are often cited in the community as free options for these file modifications. The Risks of Using Swappers
Epic Games’ systems can detect unauthorized changes to game files, often resulting in permanent account bans. fortnite-skin-swapper-free-download
These changes are "client-side," meaning only you can see the new skin. Other players in your lobby or match will still see you wearing your original outfit. Tools like Galaxy Swapper v2 are often cited