Partial (diffuses sky light)
dec: 30 hex: 1E bin: 11110
See § Data values
Cobwebs are blocks that slow down movement.
Cobwebs can be obtained by clipping them with shears. One will also drop itself if broken with a sword enchanted with Silk Touch.[fn 1] A cobweb will drop one piece of string if broken with a non-Silk Touch sword or if water touches or flows over it or a piston pushes it. It will drop nothing when broken using anything else.
Mobs can spawn inside of cobwebs, in which case they will not catch fire if they are caught in a cobweb. They also diffuse sky light.
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 1 block. They will partially stop blast damage if a player and the TNT/creeper/etc. are both caught in the cobweb. The slowing effect of the cobweb will increase if it is placed on ice.
A cobweb affects the player's movement abilities, as well. While in contact with it, the player 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[Java and Legacy Console editions only]. A cobweb also limits the rate at which a player can break blocks. Like water, falling into a cobweb will prevent a player from taking fall damage, meaning a fatal fall can be mitigated with cobwebs. Attacking while falling through a cobweb counts as a critical hit, the same as when falling after a jump.
Items thrown into a cobweb are slowed and will fall through it after a maximum of about 24 seconds depending on where it enters. 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 that falls or is shot into a cobweb will slow down, then drop as an item after about 4 seconds.[Java Edition only] A shot arrow will pass through cobwebs without being slowed.
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, however 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 unless they come into direct contact.
|String||Cobweb||[Bedrock and Legacy Console editions only]|
|Block||Namespaced ID||Numeric ID|
|Java Edition Classic|
|October 23, 2009||Notch originally planned for spiders to produce webs.|
|0.24_SURVIVAL_TEST|| Cobwebs were added to the |
|Java Edition Beta|
|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.|
|The texture was changed, having a string based texture instead of a white solid texture.|
|Cobwebs would suffocate the player like solid blocks if entered.|
|Cobwebs would only drop string when broken using a sword.|
|1.7||Cobwebs now drop string when broken using shears.|
|1.8||New structures were introduced that incorporated cobwebs: abandoned mineshafts, especially dense near their cave spider spawners, and strongholds, especially in the libraries.|
|Cobwebs no longer suffocate the player if entered.|
|1.2.1||12w06a||Cobwebs now completely absorb all fall damage.|
|1.4.4||pre||Cobwebs no longer slow down flying players in Creative.|
|1.4.6||12w49a||Cobwebs can be now obtained in Survival with the Silk Touch enchantment on shears or a sword. In Survival mode, however, only shears can be enchanted with Silk Touch.|
|1.9||15w43b||Cobwebs now can be found in igloo basements.|
|15w47c||Silk Touch is no longer required to obtain cobweb when using shears.|
|15w49a||Cobwebs now catch ender pearls, snowballs, eggs, bottles o' enchanting, and thrown potions as the corresponding dropped items.|
|15w49b||Cobwebs no longer catch thrown projectiles as dropped items.|
|1.11||16w39a||Cobwebs now generate in woodland mansions.|
|1.13||17w47a||The ID has been changed from |
|Prior to The Flattening, this block's numeral ID was 30.|
|Pocket Edition Alpha|
|0.5.0||Added cobwebs. Unobtainable without inventory editors.|
|0.8.0||build 6||Cobwebs were added to the Creative inventory.|
|0.9.0||build 1||Cobwebs now spawn naturally in abandoned mineshafts.|
|Added smooth lighting to cobwebs.|
|0.12.1||build 1||Cobwebs can be now obtained in Survival with the Silk Touch enchantment on shears.|
|1.0.0||alpha 0.17.0.1||Cobwebs now can be found in igloo basements.|
|1.1.0||alpha 126.96.36.199||Cobwebs now generate in woodland mansions.|
|alpha 188.8.131.52||Cobweb can now be crafted into 9 string.|
|?||Breaking cobweb no longer require shears with silk touch enchantment.|
|Legacy Console Edition|
|TU5||CU1||1.0||Patch 1||Added webs.|
|TU57||CU49||1.56||Patch 27||Patch 7||Cobweb can now be crafted into 9 string.|
|TU69||1.76||Patch 38||Renamed to cobwebs.|
|New Nintendo 3DS Edition|