-50% halves the size of textures in Minecraft, compared to their original appearance. Blocks, armor, weather and even some elements of the interface will become smaller, the original appearance will retain only monsters.

Screenshots of texture -50% Off 8×8!

How to install the -50% Off 8×8!

Install Optifine HD (Optional but recommended)
Copy the resource pack to your .minecraft\resourcepacks folder.
Choose your desired resource pack in the game settings