Welcome to another datapack I have made for you guys to see and that is Complex Player Scaling which finally allows you to change your sizes in Vanilla Minecraft without the use of mods or plugins and also with this datapack if your Big or a Giant you can totally destroy the blocks around you and if your very Tiny you go into small places where no mob or other player can access.

To get started do /trigger scaler to bring up the options.

There should be 8 different player sizes to choose from Tiniest to Largest.