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This article is about the invisible light-producing block. For light producing blocks in general, see Light § Light level.
Crafting Table
This article describes content that may be included in Java Edition. 
This content has appeared in Java Edition development versions, but the full update containing it has not been released yet.

Light blocks are invisible blocks, primarily intended for map makers, that can produce any light level.

Obtaining

Light blocks cannot be mined, or even targeted, similar to air. Light Blocks with light level 0 are functionally identical to air. They do not attach to any block, meaning that breaking an adjacent block does not remove the light block. However, they can be broken by replacing them with another block. The exception is water (including flowing water) which can occupy the same space as a light block. See this page for details.

Light blocks are not in the player's creative inventory. They can only be obtained using /give, with any data value from 0 to 15. This value determines the block's light level.

Usage

A light block is normally used in adventure maps (while most just apply Night Vision or Conduit Power effects). This is also used by teachers to light up assignments. ‌[edu only]

Each light block (as a block or as an item) has an associated light level, which can be anything between 0 and 15 inclusive. In the player's inventory, light blocks display their light level in the top-left corner and appear "brighter" at higher light levels.

When placed as blocks, light blocks are non-solid and completely invisible. Unlike barriers and structure void, they do not reappear when the player is holding another light block.

Light blocks can be pushed and pulled by pistons, are detected by observers, and can be waterlogged.

Light Source

Light blocks produce their associated light level.

Data values

ID

NameIdentifierNumeric ID FormTranslation key
Blocklight_block470Block & Ungiveable Item[i 1]tile.light_block.name
Itemlight_block514Itemitem.light_block.name
  1. Unavailable with /give command

Metadata

See also: Data values

Each light block has a data value between 0 and 15 inclusive, which determines its light level.

Block states

See also: Block states

Java Edition:

Name Default value Allowed values Description
waterloggedfalsetrue
false
Whether or not there's water in the same place as this light block.
level150
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
The amount of light this block outputs.

Bedrock Edition:

NameMetadata Bits Default value Allowed valuesValues for
Metadata Bits
Description
block_light_level0x1
0x2
0x4
0x8
00
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
The amount of light this block outputs.

History

Bedrock Edition
1.13.0
{{Extension DPL}}<ul><li>[[Lead|Lead]]<br/>{{About|the item used for leashing and leading mobs|the element|Element#Lead}}
{{Item
| image = Lead.png
| stackable = Yes (64)
| renewable = Yes
}}
'''Leads''' are [[tool]]s used to leash and lead passive and neutral [[animal]]s, [[golem]]s and some [[monster]]s.

== Obtaining ==
=== Chest loot ===
{{LootChestItem|lead}}

=== Crafting ===
{{Crafting
  |A1= String
  |B1= String    
  |A2= String
  |B2= Slimeball
  |C3= String
  |Output= Lead,2
  |type= Tool
}}

=== Mob loot ===
[[Wandering Trader|Wandering trader]]s always spawn with 2 [[llama|trader llama]]s, each held with a lead. When a trader llama is detached, either by killing it or the wandering trader, dragging them far apart, or putting the llama in a [[boat]] or a [[minecart]], the lead drops at the llama's position.

== Usage ==
=== Crafting ingredient ===

{{crafting usage}}

=== Leashing mobs ===
[[File:SuspendedPigs.png|190px|thumb|One block tall mobs, such as pigs, suspend at 7 blocks above the ground.]]
[[File:SuspendedCows.png|190px|thumb|Two block tall mobs, such as cows, also suspend at 7 blocks above the ground.]]

{{control|Using}} a lead on a [[mob]] ties the lead to the mob, allowing it to be moved by the player. Multiple mobs can be held by leads at once, but each mob held requires its own lead.

It is possible to leash the following mobs and other entities:

{{columns-list|colwidth=20em|
* {{EntityLink|Allay}}
* {{EntityLink|Axolotl}}
* {{EntityLink|Bee}}
* {{EntityLink|Boat}}{{only|bedrock}}
* {{EntityLink|Camel}}
* {{EntityLink|Cat}}
* {{EntityLink|Chicken}}
* {{EntityLink|Chicken Jockey}} (only the mount)
* {{EntityLink|Cow}}
* {{EntityLink|Dolphin}}
* {{EntityLink|Donkey}}
* {{EntityLink|Fox}}
* {{EntityLink|Frog}}
* {{EntityLink|Glow Squid}}
* {{EntityLink|Goat}}
* {{EntityLink|Hoglin}}
* {{EntityLink|Horse}}
* {{EntityLink|Iron Golem}}
* {{EntityLink|Llama}}
* {{EntityLink|Mooshroom}}
* {{EntityLink|Mule}}
* {{EntityLink|Ocelot}}
* {{EntityLink|Parrot}}
* {{EntityLink|Pig}}
* {{EntityLink|Polar Bear}}
* {{EntityLink|Rabbit}}
* {{EntityLink|Sheep}}
* {{EntityLink|Skeleton Horse}}
* {{EntityLink|Skeleton Horseman}} (only the mount)
* {{EntityLink|Sniffer}}
* {{EntityLink|Snow Golem}}
* {{EntityLink|Squid}}
* {{EntityLink|Strider}}
* {{EntityLink|Trader Llama}}
* {{EntityLink|Wolf}}
* {{EntityLink|Zoglin}}
* {{EntityLink|Zombie Horse}}}}

Additionally, [[villager]]s, [[wandering trader]]s, and [[monster]]s other than the ones listed above, can be leashed using a map editor or [[NBT]] editor. 

With a mob on a lead held by the player, {{control|using}} the lead on any type of [[fence]] (or [[wall]]{{only|bedrock|short=1}}) attaches the lead to it with a visible knot, tying the mob to it. To attach it to a wall on Bedrock Edition, the player must hold a lead in the main hand.<ref>{{bug|MCPE-108078}}</ref> Multiple leads may be attached to one fence post. A mob tied to a fence tends to stay within 5 blocks of the fence post.

A lead is broken by pressing the {{control|use item}} control on the mob again, hitting the knot, or removing the attached fence post. Leads also break when hit by projectiles. Whenever a lead is removed or broken, it drops as an [[item (entity)|item]] at the location of the mob. However, it does not drop when unleashed in Creative mode.{{only|java}}<ref>{{bug|MCPE-79639}}</ref> A lead does not break if the attached animal dies.

A lead can stretch a maximum of 10 blocks. If the mob is able to move towards the player or fence post, it does so. If not, or if the mob is moving very quickly away from the player, the lead breaks.

When the player or the knot is more than 7 blocks above the ground, the mob being leashed becomes suspended.

Most mobs that can be leashed can still be leashed even if attacking the player leashing them, and any attached leads do not break.

[[Wolf|Wolves]] cannot be leashed after becoming angry. Despite this, if they become angry while already leashed, the lead does not break, but it cannot be reattached when broken through other methods while the wolf is still angry.

A lead attached to a hoglin breaks if it becomes a [[zoglin]].

A lead does not prevent mobs from despawning if they normally would despawn.

When moving downwards and accelerating towards the ground, leashed mobs accumulate fall damage and take it if they hit the ground while still accelerating. When moving up or decelerating (such as when the lead is stretched to its limit), the fall distance is set to one block and the mob therefore does not take any fall damage if it touches the ground.

If the player walks into and back out of a [[nether portal]] while holding a lead connected to a mob, the lead remains attached to the mob. However, if a mob attached to a lead walks into a nether portal, the lead breaks and drops as an item in the other dimension.

A lead can be used to remove a mob from a boat without needing to break the boat, if the mob can normally be leashed.

If a chunk unloads while containing a leashed mob (either by the player walking too far away, or traveling to another dimension via a portal), the lead breaks and drops as an item, leaving the mob free to wander around.

== Sounds ==
{{Edition|Java}}:
{{Sound table
|sound=Lead Knot break1.ogg
|sound2=Lead Knot break2.ogg
|sound3=Lead Knot break3.ogg
|subtitle=Leash Knot breaks
|source=neutral
|description=When a leash knot is destroyed
|id=entity.leash_knot.break
|translationkey=subtitles.entity.leashknot.break
|volume=1.0
|pitch=1.0
|distance=16}}
{{Sound table
|sound=Lead Knot place1.ogg
|sound2=Lead Knot place2.ogg
|sound3=Lead Knot place3.ogg
|subtitle=Leash Knot tied
|source=neutral
|description=When a leash knot is placed on a fence
|id=entity.leash_knot.place
|translationkey=subtitles.entity.leashknot.place
|volume=1.0
|pitch=1.0
|distance=16
|foot=1}}

{{Edition|Bedrock}}:
{{Sound table
|type=bedrock
|sound=Lead Knot break1.ogg
|sound2=Lead Knot break2.ogg
|sound3=Lead Knot break3.ogg
|source=neutral
|description=When a leash knot is broken by {{ctrl|interacting}} with it
|id=leashknot.break
|volume=1.0
|pitch=1.0}}
{{Sound table
|sound=Lead Knot place1.ogg
|sound2=Lead Knot place2.ogg
|sound3=Lead Knot place3.ogg
|source=neutral
|description=When a leash knot is placed on a fence or wall
|id=leashknot.place
|volume=1.0
|pitch=1.0
|foot=1}}

== Leash Knot ==
'''Leash knot''' is an entity created when the [[player]] right-clicks the fence while having a mob leashed.
{{Entity| title = Leash Knot| image = Knot.png|imagesize= 100px|networkid='''[[JE]]''': 77}}
=== Data values ===
==== ID ====
{{edition|java}}:
{{ID table
|edition=java
|generatetranslationkeys=y
|displayname=Leash Knot
|spritetype=entity
|nameid=leash_knot
|foot=1}}

{{edition|bedrock}}:
{{ID table
|edition=bedrock
|shownumericids=y
|notshowbeitemforms=y
|generatetranslationkeys=y
|displayname=Leash Knot
|spritetype=entity
|nameid=leash_knot
|id=88
|foot=1}}

==== Entity data ====

Leash knots have entity data that define various properties of the entity.

{{el|java}}:
{{main|Entity format}}
{{/ED}}

{{el|bedrock}}:
: See [[Bedrock Edition level format/Entity format]].

== Data values ==
=== ID ===
{{edition|java}}:
{{ID table
|edition=java
|showforms=y
|generatetranslationkeys=y
|displayname=Lead
|spritetype=item
|nameid=lead
|form=item
|foot=1}}

{{edition|bedrock}}:
{{ID table
|edition=bedrock
|shownumericids=y
|showforms=y
|notshowbeitemforms=y
|generatetranslationkeys=y
|displayname=Lead
|spritetype=item
|nameid=lead
|id=547
|form=item
|foot=1}}

== Achievements ==

{{load achievements|So I Got That Going for Me}}

== Advancements ==

{{load advancements|When the Squad Hops into Town}}

== History ==
{{missing information|The history of a lot of mobs be leashed}}
{{History|java}}
{{History||1.6.1|snap=13w16a|[[File:Lead JE1 BE1.png|32px]] Added leads. 
|Leads do not currently have a tooltip and are called “leashes” in [http://www.mojang.com/2013/04/minecraft-snapshot-13w16a-and-new-launcher/ the change notes].}}
{{History|||snap=13w16b|Leads have been given a tooltip.}}
{{History|||snap=13w18a|Leads have been given a [[crafting]] recipe.}}
{{History||1.9|snap=15w50a|Added a [[sound]] for leads: <code>entity.leashknot.place</code>.}}
{{History||1.11|snap=16w32a|The [[entity]] ID of the knot has been changed from <code>LeashKnot</code> to <code>leash_knot</code>.}}
{{History|||snap=16w39a|Leads can now be found in [[woodland mansion]] chests.}}
{{History||1.13|snap=17w47a|Prior to [[1.13/Flattening|''The Flattening'']], this [[item]]'s numeral ID was 420.}}
{{History||1.14|snap=18w43a|[[File:Lead JE2 BE2.png|32px]] The texture of leads has been changed.}}
{{History|||snap=19w05a|Added [[wandering trader]]s, which are naturally equipped with leads.}}
{{History||1.15|snap=?|[[Bee]]s can now be leashed.}}
{{History||1.16|snap=20w09a|[[Skeleton horse]]s and [[zombie horse]]s can now be leashed.<ref>{{bug|MC-166246}}</ref>}}
{{History|||snap=?|[[Hoglin]]s can now be leashed.}}
{{History||1.16.2|snap=20w27a|[[Zoglin]]s can now be leashed.}}
{{History||1.17|snap=21w19a|[[Squid]]s and [[glow squid]]s can now be leashed.<ref>{{bug|MC-136647}}</ref>}}
{{History|||snap=?|[[Axolotl]]s can now be leashed.}}
{{History||1.19|snap=22w13a|Lead may now be found in [[ancient city]] [[chest]]s.}}
{{History|||snap=?|[[Frog]]s can now be leashed.}}
{{History||1.19.3|snap=22w42a|[[Camel]]s can now be leashed.|Mobs no longer accumulate fall damage when dangling on leads.<ref>{{bug|MC-14167||Mobs build up fall damage when dangling on a lead|Fixed}}</ref>}}
{{History||1.20 (Experimental)|link=1.19.4|snap=?|[[Sniffer]]s can now be leashed.}}
{{History||1.20|snap=23w12a|Lead can now be found in [[suspicious gravel]] and [[suspicious sand]] in [[trail ruins]].}}
{{History|||snap=23w16a|Lead no longer generates in [[suspicious sand]] in [[trail ruins]].|Due to the split of the archaeological loot tables for the suspicious gravel within the [[trail ruins]]; lead now is in the common loot.}}

{{History|pocket alpha}}
{{History||v0.15.0|snap=build 1|[[File:Lead JE1 BE1.png|32px]] Added leads.}}
{{History|pocket}}
{{History||1.1.0|snap=alpha 1.1.0.0|Leads now have better "physics".
|The [[entity]] ID of the knot has been changed from <code>leashknot</code> to <code>leash_knot</code>.
|Leads can now be found inside [[woodland mansion]] [[chest]]s.}}
{{History|bedrock}}
{{History||1.4.0|snap=beta 1.2.14.2|Leads can now be found inside [[buried treasure]] [[chest]]s.
|Leads can now be used on [[boat]]s.}}
{{History||1.4.0|snap=beta 1.2.20.1|Leads can now be used to craft [[balloon]]s.}}
{{History||1.10.0|snap=beta 1.10.0.3|[[File:Lead JE2 BE2.png|32px]] The texture of leads has been changed.
|[[Wandering trader]]s now [[drops|drop]] leads after they are detached from trader [[llama]]s.}}
{{History||1.14.0|snap=beta 1.14.0.1|Leads can now be used on [[polar bear]]s, [[ocelot]]s, [[parrot]]s, [[dolphin]]s and old [[villager]]s.}}
{{History||1.19.0|snap=beta 1.19.0.20|Allays can now be leashed.}}

{{History|console}}
{{History||xbox=TU19|xbone=CU7|ps=1.12|wiiu=Patch 1|switch=1.0.1|[[File:Lead JE1 BE1.png|32px]] Added leads.}}
{{History||xbox=TU43|xbone=CU33|ps=1.36|wiiu=Patch 13|[[Sound]]s have been added for leads.}}
{{History|Ps4}}
{{History||1.90|[[File:Lead JE2 BE2.png|32px]] The texture of leads has been changed.}}

{{History|3ds}}
{{History||0.1.0|[[File:Lead JE1 BE1.png|32px]] Added leads.}}
{{History|foot}}

== Issues ==
{{issue list|Lead|Leash}}

== Trivia ==
[[File:Steve wearing Lead.png|100px]] [[File:Alex wearing Lead.png|100px]]
* The lead is named as "leash" in the texture file.
* If a [[player]] goes to sleep while holding a mob on a lead, the lead remains attached.
* {{IN|Java}}, when using the {{cmd|item}} command to put a lead in a player's head slot, the item gets rotated and positioned in such a way that it looks like the player is wearing a monocle.

== Gallery ==
<gallery>
Multiple_Leash.png|Many animals can be tied to one fence post.
HorseLeashedOnAFence.png|A [[horse]] wearing [[golden horse armor]] that is leashed to a fence post.
ThreeTiedSheep.png|Three sheep tied to the same fence.
More accurate lead mobs.png|A shot of all the mobs that could be tied with leads as of 1.6.1, except donkeys and mules.
Yo Yo.png|With the use of the leash, it is possible to suspend animals in the air by tying the leash on high-up fence posts.
YoYo.png|A [[donkey]] with the Grumm/Dinnerbone [[name tag]] [[easter egg]] tied to a fence with a lead to make a yo-yo.
Flying_Sheep.png|Several [[sheep]] hanging in the air in [[Creative]] mode.
Pocket Edition Lead.jpg|First image of a lead in ''Bedrock Edition''.
</gallery>

== References ==
{{Reflist}}

== External Links ==
*[https://www.minecraft.net/en-us/article/taking-inventory-lead Taking Inventory: Lead] – Minecraft.net on April 8, 2022

{{items}}

{{entities}}

[[Category:Tools]]

[[de:Leine]]
[[es:Rienda]]
[[fr:Laisse]]
[[hu:Lasszó]]
[[it:Guinzaglio]]
[[ja:リード]]
[[ko:끈]]
[[nl:Leidtouw]]
[[pl:Smycz]]
[[pt:Laço]]
[[ru:Поводок]]
[[th:เชือกจูง]]
[[zh:拴绳]]
[[Category:Renewable resources]]</li><li>[[:Category:Dyes|Category:Dyes]]<br/>These are items that can be used to dye sheep, wool blocks, or combined to make other dyes.

[[Category:Items]]

[[es:Categoría:Tintes]]
[[fr:Catégorie:Teinture]]
[[hu:Kategória:Festékek]]
[[zh:Category:染料]]</li></ul>
beta 1.13.0.4Added textures for light blocks.
beta 1.13.0.9Light Block File:Light Block (Light Level 1).png File:Light Block (Light Level 2).png File:Light Block (Light Level 3).png File:Light Block (Light Level 4).png File:Light Block (Light Level 5).png File:Light Block (Light Level 6).png File:Light Block (Light Level 7).png File:Light Block (Light Level 8).png File:Light Block (Light Level 9).png File:Light Block (Light Level 10).png File:Light Block (Light Level 11).png File:Light Block (Light Level 12).png File:Light Block (Light Level 13).png File:Light Block (Light Level 14).png File:Light Block (Light Level 15).png Added light blocks.

Issues

Issues relating to "Light Block" are maintained on the bug tracker. Report issues there.

Trivia

  • Light Blocks are the only item in vanilla Minecraft to have an HD (32x32 instead of 16x16) texture.
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