Minecraft How To Duplicate, Easy Minecraft Duplication Glitch : 9 Steps

It has been suggested that this page be split into Tutorials/Block and item duplication and Tutorials/Block and item duplication/Outdated methods.

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Do not split pages until a consensus has been reached.Reason: There are many outdated and up-to-date duplication methods, splitting the page between those two will help clean up the page.
Bugs of this nature may be fixed at any time without warning. When this happens, the contraption will cease to work.Use at your own risk.

This page seeks to teach you how to clone items and blocks without building a separate farm for them, in vanilla Survival mode. It can be treated as an “everything farm,” since it can “farm” things that can”t normally be farmed, like block of diamonds, dragon eggs and other non-renewable blocks.

If any of these do get patched, you must either go back versions or use third-party applications in order to replicate them again. For Java Edition, this can happen in the wtbblue.com Launcher, but on Bedrock Edition, you must use third party applications in order to replicate these again. These third-party applications are NOT owned or endorsed by Mojang, so use at your own risk.

Note that these techniques are considered “cheating” by many people and Mojang tries to remove the ability to duplicate in Survival during almost every update. On some servers, these techniques are bannable offenses.

The best way to duplicate a block is to turn it into an item first, then duplicate the item. However, there are other ways to duplicate the blocks themselves, though they only work for certain blocks. Shulker boxes make item duplication much easier because they allow for up to 1,729 items to be cloned at once (including the shulker box).


2 Legitimate Duplication (Both Editions)3 Java Edition3.1 Unpatched/Working3.1.1 Singleplayer3.1.2 Unknown/Unpatched (SP and MP )3.2 Block Duplication3.2.1 Unpatched3.2.2 Patched (Paper)3.3 Patched/Non-Working3.3.1 Singleplayer3.3.2 Multiplayer3.3.3 Both4 Bedrock Edition4.1 Unpatched4.2 Patched


Duplicate your most valuable gear: if you lose them to lava or the Void, you can just pull a backup from your backup chest! More specifically, you make a duplicate from your backup, so you can go through the entire process if you lose them again.Duplicate Enchanted Books / Diamonds / Ancient Debris / Netherite Ingots / Emeralds: Once you have one, you”ll have an infinite amount by duplicating it. Again, it is important to leave some stock as backup; you never know if you need more.

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Duplicate Enchanted tools / Blocks: You”ll never have to worry about running out of your tool / block of choice, since you can just duplicate them as well. Duplicate in bulk for items/blocks that will be used in large quantities.Duplicate Shulker Boxes (with items inside): theoretically you can duplicate both the shulker box and the items it contains, since that info is stored within the shulker box itself. Use this to duplicate blocks in excessive quantities.Duplicate Enchanted Equipment: combined with a grindstone, you can farm an infinite amount of EXP by removing enchantments from duplicated enchanted gear. While a decent, safe and consistent method of getting exp, building an Enderman Farm is faster.

If you happen to be a speedrunner, duplication if allowed can cut down a lot in your game time. One extreme example is the TAS Any% speedrun done in 29.41, complete with the dragon dead. Alt+F4 is usually used for this purpose.

Legitimate Duplication (Both Editions)

Dirt Duplication

Start by obtaining at least 2 dirt and gravel from bartering. Next, craft coarse dirt using 2 dirt and 2 gravel for 4 coarse dirt, then till the dirt and mine it to obtain 2 extra dirt. With a bartering farm, a good hoe, and a good shovel, you can mass produce dirt in a matter of minutes. However, this is not perfect duplication, as you will need a constant supply of gravel.

Java Edition


Currently, work as of the latest release of vanilla wtbblue.com. They may be patched in modified servers (such as Spigot, or Paper), which many servers use, but have been tested and they still work in unmodified conditions. In singleplayer, these will work but in multiplayer, these will usually not work.

SingleplayerBasic Save File manipulation

This method is safe and reliable. Needs only the desired items for duplication as well as a chest. You need to have access to save files so this is impractical on servers, where admins aren”t giving FTP out like candy.

Have the desired items to be duplicated on you: whether it”s in your inventory, on your hotbar or equipped doesn”t matter.Exit and save the game – returning to the main menu is quickest.Navigate to your save folder. On Linux, this is located at ~/.wtbblue.com/saves, on macOS it”s at ~/Library/Application Support/wtbblue.com/saves, and on Windows, it”s at %appdata%.wtbblue.comsaves.Making a backup folder of the target world folder is advised but unnecessary.Open the target world folder and duplicate the level.dat and level.dat_old files.It is advised you keep the duplicates in a place easy to access, usually the world save folder itself. This especially applies if you plan to duplicate items multiple times.Alternatively, have multiple folders on screen to simply select, copy and paste from one to another.Enter the target world and deposit the desired items to be duplicated into a chest.Exit the world and return to the main menu; the game should save.Copy and paste the duplicated level.dat files back into the target world folder.Enter the target world. The desired items should both be in the inventory and in the chest.

Extra info: these files also contain your current location and your exp. Theoretically, you can enchant some gear, deposit it in a chest, then load the level.dat file to preserve your level and keep the enchanted gear. Another potential use is to use up your inventory while building then load a backup to keep your progress and refill your inventory with the building material. You could even use this to try multiple times to kill the Ender Dragon / Wither without risking your gear and inventory.

Disclaimer: the environment and mobs are not saved with this method, do not attempt to summon the Wither near places of importance or important mobs. Instead, backup the entire target world folder and load it in event of failure. Perform test runs to ensure that this method works.

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Alt+F4 v2.0 – Task Manager

Alt+F4 is patched, but using Task Manager to end the task, on the other hand, is NOT patched, and still works. This is very similar to the Alt+F4 method.Steps:

Open task managerGo into the world you want to dupe the items inMake sure “Pause on Lost Focus” is off – Do this by pressing F3+P until you see something like “ Pause on lost focus: disabled” in chatPut the items that you would like to dupe in your inventoryClose the world and open it up againWhen it loads drop the items on ground by pressing “Q” on the item. Don”t close your inventory.Quickly press ALT+TAB or CTRL+SHIFT+ESC to get into Task ManagerEnd the process “Java(TM) Platform SE Binary”Open wtbblue.com and load the world againCollect your items

From testing, it doesn”t always work. Try playing with different timings.

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