Stackable Items — Increase Stack Sizes | Minecraft Java 1. 20. 5+

Stack potions, boats, buckets, ender pearls, and more! increase the stack limits of commonly used items

Features

Auto-Stacking

Unlike other stack-size datapacks, Stackable Items automatically consolidates your inventory. Pick up a second boat and it merges into your existing stack

Note: Items with variant data (potions, tipped arrows, suspicious stew, goat horns, bundles) get the increased stack size but must be manually combined to preserve their unique effects/contents.

Items That Now Stack to 16 (previously 1)

• Potions — Potion, Splash Potion, Lingering Potion, Tipped Arrow
• Boats — All 10 wood variants (Oak, Spruce, Birch, Jungle, Acacia, Dark Oak, Mangrove, Cherry, Bamboo Raft, Pale Oak)
• Chest Boats — All 10 chest boat / chest raft variants
• Minecarts — Minecart, Chest Minecart, Hopper Minecart, TNT Minecart, Furnace Minecart
• Utility — Saddle, Name Tag, Lead, Bundle, Totem of Undying, Goat Horn
• Food — Cake, Honey Bottle, Suspicious Stew, Mushroom Stew, Rabbit Stew, Beetroot Soup

Items That Now Stack to 64 (previously 16)

• Projectiles — Snowball, Egg, Ender Pearl
• Signs — All 12 sign variants (Oak through Pale Oak, Crimson, Warped)
• Hanging Signs — All 12 hanging sign variants
• Buckets — Empty Bucket, Water Bucket, Lava Bucket, Powder Snow Bucket, Axolotl Bucket, Cod Bucket, Salmon Bucket, Tropical Fish Bucket, Pufferfish Bucket, Tadpole Bucket

Safe by Design

intentionally does NOT modify:

Tools, armor, enchanted books, written books, maps, shields, bows, crossbows, elytra, music discs, banners, or player heads.

These items carry unique NBT/component data and modifying their stack size would cause item data loss.