Data Packs for Minecraft Java
Browse 15,706 free data packs for Minecraft Java — popular picks include Dye Casting Recipes (Hex Casting x Dye Depot Compat), Better Craftable Bells, Flerp's Exploration Data.
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Dye Casting Recipes (Hex Casting x Dye Depot Compat)
A data pack that adds compatibility between Dye Depot and Hex Casting.

Better Craftable Bells
Adds the ability to craft the bell using any wooden slab!
Flerp's Exploration Data
Data required by Flerp's Exploration Pack

Raw Ore From Nuggets
Changes the result of 9 nuggets from an ingot to the raw variant

Bleak and Grim
Vanilla worldgen without the joy and whimsy.
Corebound Vibe Leaderboard
have players roll an number between 0 and 100 to get the vibe. broadcast result and push to leaderboard

CSD - Better Arrows
I'm trying to create cool custom datapacks, that are also puplished on our server and you can use them to.

Bundle Bin
A craftable Bundle that deletes it's contents, great for clearing up junk from your inventory
No Lava Chicken
Removes the lava chicken music disc from the loot table

Gjallarhorn
This datapack allows you to give yourself an OP Goat Horn which has the function of dealing unlimited damage to those around you.

Cuboids
You can create your own cuboid and be safe from other players!

Light's Changes
Just some basic improvements and changes to minecraft that I found to be useful.

Log4MC
A logger for Minecraft Datapacks

Prismatic Wings
Prismatic Wings adds two smithing table recipes which upgrade an elytra, which can propel themselves without fireworks.

Fillable Bottle o' Enchanting
Turn your experience into Bottle o’ Enchanting in a simple, vanilla-friendly way.

DPNPC
Customizable NPCs using Minecraft's mannequin entity.

Effect Shrines
A data pack that adds new structures to the game.

Better Birch Biome
This datapack includes the features of Drop 26.3 such as shelf mushrooms and yellow poplar leaves to give the Birch Forest a better look.

Flamethrower on fire
This datapack adds a flamethrower and a crafting recepti for it but fore the tecture you also need a resourse pack cald Flamethrower resourse pack

Block display builder
Select the build and transform it to block displays with very customizable options (scale, collision ...)

MCA Anvil Fix
This data pack fixes the 'tag.mca:anvils' issue in MCA Reborn (Minecraft Comes Alive Reborn).

Elements paintings
The Four Elements Paintings are now craftable in the stone cutter
Aeronautics Anti-Grief & Dupe Patch
Blocks terrain-grab griefing and an item-drain dupe in Create: Aeronautics via the non_movable tag.

I HATE leaf litter
adds a leafblower that can quickly remove lots of leaf litter
Enchantment Rarity
Ever wanted to make your enchantment have a different rarity depending if they're in or above vanilla levels?

Eating Ability
Eating Ability transforms Minecraft survival by giving players unique powers and abilities when consuming different items.
StructureCraft
A datapack that adds structures.

New Recipes
This datapack adds new recipes for items that are currently uncraftable

Gunpowder crafted from Sulfur Recipe
This datapack adds a recipe for gunpowder to be crafted from sulfur and other ingredients
The Sculk Sword - Epic Fight Compat
A small Datapack (and kinda buggy, wil fix later) that makes this mod compatible with Epic Fight

Rebalancing of keepInventory
This data pack adds an experience penalty for keepInventory.

Farmer's Delights Tomato to Red Dye Recipe
Makes Farmer's Delights' tomatoes be able to be crafted into red dye
Vinaigrette Dungeons
A data pack that changes Minecraft's dungeon generation, in a lore friendly way.

Synchronized Inventory
This datapack synchronized every player's inventory. Whenever a player obtains or loses an item, everyone also obtains or loses it.

AnimatedWorldClock
A configurable animated world clock datapack with multiple display modes, styles, and optional sounds.

Rotating Announcements
A simple datapack for servers to run a rotating list of announcements with a single function call.