Upsizer Mod 1.12.2/11.8

Upsizer Mod for Minecraft 1.12.2, 1.8

Updated: Dec 30, 2017 | 903 views |

This mod does one thing: It up-sizes or increases the max stack size per slot of various Minecraft items in inventories (player, chests, dispensers, etc.). Ever get frustrated that you can stack 64 anvils into a slot but only 16 eggs? Or that it’s OK to stack 64 fences and gates, but only 16 signs? Well be frustrated no more! Stack your eggs to the sky (well, 64 high)! Need to carry a double-chest’s worth of lava buckets? Just stack those empties to 64 and head to the nearest lava lake: 64 lava buckets, 1 slot, done.
Upsizer-Mod.png Out of the box, upsizer mod will up-size items that are already stackable like signs, eggs, empty buckets, etc. However, you can also up-size items that are limited to just one item per slot by default (but first, read “the warning” below). Up-sizing is not limited to vanilla Minecraft items, you can also extend the mod’s configuration to up-size items from other mods.


When deciding what you should up-size keep the following three categories of items in mind:

  • Upsize-ready (Harmless) Items: These are items that already support multiples per slot but have some imposed limit in the interest of “fair” or “balanced” game-play or some such thing. Examples include: signs, banners, eggs, ender pearls, buckets. Up-sizing these should not trigger any issues unless there is another mod installed that requires the vanilla stack size (which would be odd but you never know).
  • Damageable Items: These are items that can take damage and are probably limited to one-per-slot as each damage level is effectively a new type of item. Up-sizing these sort of items is most effective for storing multiple new or undamaged items. You should still only use these items with one per inventory slot. In fact, when crafting new items don’t even have a damaged version in your inventory as Minecraft might merge the new items into the same slot as the damaged one(s). Examples include: tools, weapons, and armor.
  • Contained/er and other special use Items: These items may be limited because of how they are used. Up-sizing these items is also just a way to increase your storage of unused items as Minecraft is often hard-wired to assume use of a single unstacked item at a time. Examples include: cakes, stews, filled buckets, filled potion bottles, and enchanted books.

When you up-size items that are usually limited to a single item per inventory slot, pay attention before using the stacked items as a single item (this goes for using the item directly or indirectly via crafting or smelting). Or better yet, save yourself any pain and just don’t do that. Store the items stacked; always unstack to a single item before using.

How to install:

  • Download and install Minecraft Forge.
  • Download the Upsizer Mod from link below.
  • Go to .minecraft/mods folder. If the “mods” folder does not exist you can create one.
    • Windows – Open the Start menu and select Run, or press the Windows key + R. Type (without quotes) “%appdata%\.minecraft\mods” and press Enter.
    • OS X – Open the Go menu in Finder and select “Go to Folder”. Type (without quotes) “~/Library/Application Support/minecraft/mods” and press Return.
  • Copy the downloaded jar (zip) file into the “mods” folder that opens.
  • Enjoy the mod.

Download Links:

For 1.8

For Minecraft 1.12.2, 1.12.1, 1.12

Download from Server 1Download from Server 2

Credits: The_Wabbit