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Partial (diffuses sky light)



Blast resistance





This block can be broken with any tool, but a sword is the quickest; however it still takes double damageGrid Shears.png




Yes (64)



First appearances

See History



Data value

dec: 30 hex: 1E bin: 11110



Cobweb is a block which slows down movement.


Cobwebs can be obtained by mining them using shears or a sword[fn 1] enchanted with Silk Touch. It will drop 1 piece of string if the shears or sword are not enchanted Silk Touch, and will drop nothing when broken using anything else.

Hardness 4
Breaking time[note 1]
Hand 20
Shears 0.4
Sword 0.4
  1. Times are for unenchanted tools in seconds.

Natural generation[edit]

Cobwebs generate naturally in stronghold libraries and in abandoned mine shafts.


Mobs can spawn inside of cobwebs. They will not catch sun fire if they are caught in a cobweb. They also diffuse sky light.

Blocks can be placed on cobwebs, including signs and paintings. When moved by a piston, or sticky piston, the cobweb will drop as a string. When placed in water, it is destroyed and drops a single piece of string. This also happens if water touches them.

Redstone circuits[edit]

2 cobwebs delay for around a minute

Cobwebs can be used in redstone as a delay by using a dispenser or dropper to discharge an item into a tower of cobwebs above a pressure plate or hopper.


All mobs that move through cobwebs will slow down, with the exceptions of spiders and cave spiders. Mobs falling through cobwebs will take 13 seconds to move down by 1 block. They will partially stop blast damage if a player and the TNT/creeper/etc are in the cobweb. The slowing effect of the cobweb will increase if it is placed on ice.

Moving into a cobweb limits the Player's movement abilities, as well. When you are "inside" the cobweb, you will move at a speed of about 15% of the normal walking speed. Additionally, jumping will vibrate the player akin to jumping in a 2-block-high space. It also slows the time of a player breaking blocks. Like water, cobwebs will prevent players falling into it from taking fall damage, meaning a fatal fall can be mitigated with cobwebs. While traveling down through a cobweb and attacking, it counts towards critical hits the same as jumping and attacking as the player falls.

Items thrown on a cobweb are slowed and will fall through it after about 24 seconds. They will not merge with other items of the same type thrown on the ground.

Cobwebs have different effects on moving entities. A falling block which falls or is shot into a cobweb will slow down and then be destroyed and become a resource after about 4 seconds. The exception is Primed TNT can pass through Cobwebs without slowing down if they are shot through fast enough, eventually exploding and destroying the cobweb. A shot arrow will pass through cobwebs without being slowed down. Ender pearls are "caught" by cobwebs, which makes them ideal for stopping players from teleporting over walls.

A minecart with no players in it takes about 9 seconds to fall through a cobweb if a rail is placed directly under the cobweb, but if there is air between the cobweb and the rail, the minecart takes about 34 seconds to fall. Every extra cobweb added will give an additional 25 seconds of falling time. Players are unaffected by cobwebs when in a minecart except when the cobwebs are in the way of the cart.



October 23, 2009 Notch originally planned for spiders to produce webs.
Cobwebs were added to the terrain.png file some time during Classic, but had no block ID assigned.
1.5 Cobweb blocks were introduced, but did not occur in the world and could only be obtained with a third party mod or cheat.
Cobwebs would suffocate the player like solid blocks if entered.
Cobwebs would only drop string when broken using a sword.
The texture was also changed from Spiderweb.png to Spiderwebdetailed.png, having a string based texture instead of a white solid texture.
1.7 Cobwebs now drop string when broken using the new shears.
1.8 New structures were introduced which included cobwebs: abandoned mine shafts, especially dense near their cave spider spawners, and strongholds, especially in the libraries.
Cobwebs no longer suffocate the player if entered.
Official release
1.2.1 12w06a Cobwebs now completely absorb all fall damage.
1.4.6 12w49a Cobwebs can be now obtained with the silk touch enchantment on shears or a sword.
Pocket Edition Alpha
0.8.0 build 6 Cobwebs were added to the creative inventory.
0.9.0 build 1 Cobwebs now spawn naturally in abandoned mine shafts.
Added smooth lighting to cobwebs.
Console Edition
TU5 Added cobwebs.


Issues relating to "Cobweb" are maintained on the issue tracker. Report issues there.



  1. Swords can only be enchanted with Silk Touch using Creative or commands