Upsizer Mod 1.16.3/1.15.2 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 1.14.4/1.12.2 free download can be found here: