ItemLink

For the data previously at "ItemLink", see ItemLink/Archive.

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Item hyperlinks are used to encode information for item tooltips and to pass item information between clients.

Parameters

item : itemID : enchantID : gemID1 : gemID2 : gemID3 : 0 : suffixID : uniqueID : linkLevel : specializationID : modifiersMask : context : numBonusIDs[:bonusID1:bonusID2:...] : numModifiers[:modifierType1:modifierValue1:...] : relic1NumBonusIDs[:relicBonusID1:relicBonusID2:...] : relic2NumBonusIDs[:...] : relic3NumBonusIDs[:...] : unk

itemID

Item ID used for e.g. GetItemInfo()

enchantID #

Permanent enchants.

gemID1, gemID2, gemID3, 0 (gemID4)

Item IDs of socketed gems.

suffixID #

Random item suffix e.g. "of the Owl".

uniqueID #

Data pertaining to a specific instance of the item.

linkLevel

Level of the character supplying the link. This is used to render scaling heirloom item tooltips at the proper level.

specializationID

Class Specialization of the character supplying the link. This is used to display the appropriate primary stat and set bonuses on gear. Added in Patch 6.2.0.

modifiersMask

Undocumented. Added in Patch 6.2.0.

context

Usually refers to the instance Difficulty. Added in Patch 6.0.2.

numModifiers

The number of modifiers.

modifierType1, modifierValue1, ...

Undocumented.

numBonusIDs

The number of bonusIDs. Added in Patch 6.0.2.

bonusID1, bonusID2, ...

Data describing how the item differs from a generic instance of its base Item ID. Added in Patch 6.0.2. See below for more info.

relic1NumBonusIDs, ...

The number of bonusIDs for the socketed artifact relic. Added in Patch 7.0.3.

relic1BonusID1, relic1BonusID2, ...

Data describing how the socketed artifact relic differs from a generic instance of its base Item ID. Added in Patch 7.0.3.

unk

Undocumented.

Details

Enchant IDs

See list of EnchantIds, defined in SpellItemEnchantment.db2

• ItemLinks can be altered to have any enchantID or any bonus stats and still be valid for use in SendChatMessage() and tooltips.
• Temporary enchants like [Windfury Weapon] and  [Rough Sharpening Stone] do not appear in the ItemLink, even though they are listed in SpellItemEnchantment.db2

Suffix IDs

Item suffixes are given to items that get randomized stat ratings e.g. "of the Bear".

• Positive IDs are listed in SuffixId.
• Negative IDs (post-2.0) refer to (multiple) enchantIDs. They are listed in ItemRandomSuffix and ItemRandomSuffix.db2.

Unique IDs

UniqueId contains information on the maker of a crafted item, number of charges or uses if applicable, or other information exclusive to one particular manifestation of an item. Items received from quests frequently have a UniqueId value, and occasionally dropped items have one as well. The numbers don't appear to hold any information in and of themselves, and are not consistent in any way across servers like EnchantIds and SecondaryIds. The value appears to be a link to a database entry on the server or client that contains the unique information such as who made an item, which quest it came from, when the quest was delivered, who sold the item on the Auction House, etc. GMs would then be able to track an item should a petition about one be made. UniqueID can have negative values (see Scaled Random Suffixes below).

Addendum: In-game testing indicates that the UniqueId can change from the first loot to successive loots on the same item. To observe this behavior, Master Looter method was used, an item meeting the loot threshold found, and then the loot window closed without giving the item to a raid member. On re-opening the corpse, the value had changed. For example, on the first loot of Shimmering Trousers of the Eagle, the UniqueId value was 0x00009182. On successive loot attempts it was 0x40679182. Note that the low order bytes were maintained. In at least a few observations, negative UniqueId values did not change in successive looting attempts.

UniqueIds can be repeated (and thus are not truly "unique"). This has been observed when disenchanting items, where the UniqueId was the same for every  [Maelstrom Crystal] "created" by the same player sharding raid loot. Another observed example is a less common occurrence: looting the  [Elementium Gem Cluster] for the rogue legendary daggers quest; the UniqueId field was the same (-534608128) for every gem cluster from every boss across multiple months of raid instance IDs. (It's not known whether the value would be the same for all rogues on that quest, or whether it was a value specific to this rogue on this quest.)

On negative UniqueID's: A negative UniqueID is not special in any way. It seems that (sometimes!) the high 16 bits are simply "random", i.e. 0x0000-0xffff. If this value is >0x8000, it will translate to a negative decimal value (signed 32-bit).

Modifier Types

ID	Type	Description
0	TRANSMOG_APPEARANCE_ALL_SPECS
1	TRANSMOG_APPEARANCE_SPEC_1
2	UPGRADE_ID
3	BATTLE_PET_SPECIES_ID
4	BATTLE_PET_BREED_DATA
5	BATTLE_PET_LEVEL
6	BATTLE_PET_DISPLAY_ID
7	ENCHANT_ILLUSION_ALL_SPECS
8	ARTIFACT_APPEARANCE_ID
9	TIMEWALKER_LEVEL
10	ENCHANT_ILLUSION_SPEC_1
11	TRANSMOG_APPEARANCE_SPEC_2
12	ENCHANT_ILLUSION_SPEC_2
13	TRANSMOG_APPEARANCE_SPEC_3
14	ENCHANT_ILLUSION_SPEC_3
15	TRANSMOG_APPEARANCE_SPEC_4
16	ENCHANT_ILLUSION_SPEC_4
17	CHALLENGE_MAP_CHALLENGE_MODE_ID
18	CHALLENGE_KEYSTONE_LEVEL
19	CHALLENGE_KEYSTONE_AFFIX_ID_1
20	CHALLENGE_KEYSTONE_AFFIX_ID_2
21	CHALLENGE_KEYSTONE_AFFIX_ID_3
22	CHALLENGE_KEYSTONE_AFFIX_ID_4
23	ARTIFACT_KNOWLEDGE_LEVEL
24	ARTIFACT_TIER
25	TRANSMOG_APPEARANCE_SPEC_5
26	PVP_RATING
27	ENCHANT_ILLUSION_SPEC_5
28	CONTENT_TUNING_ID
29	CHANGE_MODIFIED_CRAFTING_STAT_1
30	CHANGE_MODIFIED_CRAFTING_STAT_2
31	TRANSMOG_SECONDARY_APPEARANCE_ALL_SPECS
32	TRANSMOG_SECONDARY_APPEARANCE_SPEC_1
33	TRANSMOG_SECONDARY_APPEARANCE_SPEC_2
34	TRANSMOG_SECONDARY_APPEARANCE_SPEC_3
35	TRANSMOG_SECONDARY_APPEARANCE_SPEC_4
36	TRANSMOG_SECONDARY_APPEARANCE_SPEC_5
37	SOULBIND_CONDUIT_RANK

Bonus IDs

They can be used for storing random suffixes (e.g. "of the Fireflash"), random bonuses (e.g. bonusID 40 is +Avoidance), raid types (see below), dungeon typing, random quest upgrades (see below for epic/rare), crafting upgrades (e.g. bonusID 526 is "Expert") and others.

Some examples of bonusIDs:

• 448 - Warforged, +6 itemlevel
• 449 - Heroic, +13 itemlevel
• 450 - Mythic, +26 itemlevel
• 451 - LFR, -12 itemlevel
• 15 - Epic, +10 itemlevel
• 171 - Rare, +5 itemlevel

BonusIDs can adjust item levels, modify stats, change item quality, add item titles, append words to item names, add sockets, adjust appearance, adjust required equip level, and possibly many more.

Upgrade Type IDs and Values

These can be used to make various item level scaling adjustments to gear and allow those changes to display to other players.

NOTE: Upgrade IDs were changed in patch 6.2 to expand their use. The existing IDs were moved to the end of the bonus ID's and a new type ID number took their place earlier in the string.

Examples:

• Type 4: MoP Item Level Upgrading - the upgradeValue is a traditional 'upgradeID', which specifies the ilvl adjustments already made and/or remaining.

Legendary Healer Cloak Example:
  2/4 Upgrades -
       |cffff8000|Hitem:102247::::::::100:105:4:::493|h[Jina-Kang, Kindness of Chi-Ji]|h|r
  4/4 Upgrades -
       |cffff8000|Hitem:102247::::::::100:105:4:::505|h[Jina-Kang, Kindness of Chi-Ji]|h|r
 

• Type 512: Timewarped Item Level Adjustments - the upgradeValue will be the level of the character when the gear was acquired. This allows other players to view the gear at the appropriate level rather than their current level. This upgrade type is used in conjunction with bonus ID 615.

Level 100 BC Timewarped Weapon:
     |cff0070dd|Hitem:123999::::::::100:105:512:22:1:615:100|h[Lightsworn Hammer]|h|r
Level 100 WotLK Timewarped Weapon:
     |cff0070dd|Hitem:127491::::::::100:105:512:22:1:615:100|h[Staff of Wayward Principles]|h|r
 

• Mythic Keystones:

Type 4587520: 0 Affixes

UpgradeValues - KeystoneDungeon:KeystoneLevel[:LootEligible]

Type 5111808: 1 Affix

UpgradeValues - KeystoneDungeon:KeystoneLevel:AffixID1[:LootEligible]

Type 6160384: 2 Affixes

UpgradeValues - KeystoneDungeon:KeystoneLevel:AffixID1:AffixID2[:LootEligible]

Type 4063232: 3 Affixes

UpgradeValues - KeystoneDungeon:KeystoneLevel:AffixID1:AffixID2:AffixID3[:LootEligible]

Value 1: KeystoneDungeon - The ID of the dungeon the keystone can modify

ID	Dungeon
1456	Eye of Azshara
1458	Neltharion's Lair
1466	Darkheart Thicket
1477	Halls of Valor
1492	Maw of Souls
1493	Vault of the Wardens
1501	Black Rook Hold
1516	The Arcway
1571	Court of Stars

Value 2: KeystoneLevel - The mythic level of the keystone dungeon

Value 3+: AffixID's - ID #'s representing the affixes applied to the dungeon enemies/bosses. Affix value segments are omitted if there are no affixes.

ID	Affix
1	Overflowing
2	Skittish
3	Volcanic
4	Necrotic
5	Teeming
6	Raging
7	Bolstering
8	Sanguine
9	Tyrannical
10	Fortified

Last Value: LootEligible - Flag representing if the loot can be obtained from the dungeon. 1 if loot eligible or segment omitted if keystone is depleted.

Example Keystone Strings:
     0 Affixes, Eye of Azshara, Lvl 3, Non-Depleted
          |cffa335ee|Hitem:138019::::::::110:105:4587520:::1456:3:1:::|h[Mythic Keystone]|h|r
     1 Affix, Black Rook Hold, Lvl 4, Bolstering Affix, Non-Depleted
          |cffa335ee|Hitem:138019::::::::110:62:5111808:::1501:4:7:1:::|h[Mythic Keystone]|h|r
     2 Affixes, The Arcway, Lvl 7, Raging Affix, Necrotic Affix, Non-Depleted
          |cffa335ee|Hitem:138019::::::::110:105:6160384:::1516:7:6:4:1:::|h[Mythic Keystone]|h|r
     3 Affixes, Maw of Souls, Lvl 10, Bolstering Affix, Overflowing Affix, Tyrannical Affix, Depleted
          |cffa335ee|Hitem:138019::::::::110:105:4063232:::1492:10:7:1:9:::|h[Mythic Keystone]|h|r
 

Scaled Random Suffixes

Since WoW 2.0, both the SuffixIds and the UniqueIds have the ability to be negative. This indicates a different way of calculating the stats bonuses is being used. Previous to WoW 2.0, every time a new stats bonus was added to a new item, the SuffixId list needed to be updated via a client patch. This limited Blizzard's ability to arbitrarily add new items to the game, since the new data would need to be accompanied by a client patch if it's stats bonus did not already exist.

Post 2.0, a new system of stats bonuses has been implemented via the ItemRandomSuffix table. If the suffixId is negative, it indicates that the suffix of the item is instead one of the new RandomSuffixes, and that the uniqueId will contain an embedded suffixFactor, which can be extracted via the following algorithm.

local suffixFactor = 0
local linkType, itemId, enchantId,
    jewelId1, jewelId2, jewelId3, jewelId4,
    suffixId, uniqueId = strsplit(":", '''itemString''')
suffixId = tonumber(suffixId) or 0
uniqueId = tonumber(uniqueId) or 0
if (linkType == 'item') then
    if (suffixId < 0) then
      suffixFactor = bit.band(uniqueId, 65535)
    end
end

To see how this suffixFactor gets applied to get the final stat bonuses, see the ItemRandomSuffix table.

WotLK

In 3.2, WotLK random stat items got upgraded, i.e. their scaling factors changed.

This means that the high 16 bits of the uniqueid remained the same, but the low 16 bits changed.

If this was a one-time thing, we could have lived with item databases etc becoming slightly wobbly. But that's not the whole story. As soon as you place an item in mail, or AH, or a guild bank, it gets downgraded again. So the uniqueIDs are no longer constant.

Update: It seems that this only happens with items that were actually looted/spawned/crafted before 3.2.

Examples:

|cff1eff00|Hitem:36050:0:0:0:0:0:-8:-2052980689:76:0:0|h[Crystalsong Bracelets of the Whale]|h|r
|cff1eff00|Hitem:36050:0:0:0:0:0:-8:-2052980680:76:0:0|h[Crystalsong Bracelets of the Whale]|h|r
0x85A2002F vs
0x85A20038
Difference: 9

|cff1eff00|Hitem:36156:0:0:0:0:0:-18:1209139262:76:0:0|h[Wendigo Boots of Agility]|h|r
|cff1eff00|Hitem:36156:0:0:0:0:0:-18:1209139275:76:0:0|h[Wendigo Boots of Agility]|h|r
0x4812003E vs
0x4812004B
Difference: 13

|cff0070dd|Hitem:44741:0:0:0:0:0:-26:77201509:76:0:0|h[Mechanized Snow Goggles of Spell Power]|h|r
|cff0070dd|Hitem:44741:0:0:0:0:0:-26:77201534:76:0:0|h[Mechanized Snow Goggles of Spell Power]|h|r
0x049A0065 vs
0x049A007E
Difference: 25

|cff0070dd|Hitem:44732:0:0:0:0:0:-36:1867317349:76:0:0|h[Azure Dragonleather Helm of the Sorcerer]|h|r
|cff0070dd|Hitem:44732:0:0:0:0:0:-36:1867317374:76:0:0|h[Azure Dragonleather Helm of the Sorcerer]|h|r
0x6F4D0065
0x6F4D007E
Difference: 25

|cff1eff00|Hitem:36675:0:0:0:0:0:-44:-1664483297:76:0:0|h[Sockeye Dagger of the Elder]|h|r
|cff1eff00|Hitem:36675:0:0:0:0:0:-44:-1664483292:76:0:0|h[Sockeye Dagger of the Elder]|h|r
0x9CCA001F
0x9CCA0024
Difference: 5

For added humor, note that GetItemCount() and PickupItem() will work on both the downgraded and upgraded itemstrings (tested for items in bags), but a SecureActionButton using the "target-item" attribute will only work if given the upgraded itemstring.

Plain links

• ItemLinks obtained from the Void Storage will give a generic GetItemInfo() link which only contain the itemID, linkLevel and specializationID since all modifications will have been removed.

Examples

"item:6948::::::::80:105::::::"

The first number is the ItemID for a  [Hearthstone]. The next 7 values are empty, which tells the client it has no enchants, gems, extra stats, and wasn't made by anyone. The 9th number, 80, means that the link applies to level 80 characters.

"item:18832:2564:::::::80:105::::::"

The first number is the ItemID for  [Brutality Blade]. The second number (enchantId) in this case denotes that it is enchanted with +15 agility.

"item:10242::::::614::80:105::::::"

The first number is the ItemID for  [Heavy Lamellar Gauntlets]. The seventh number (suffixId) adds to this item's name " of the Monkey" and adds +11 Agility and +11 Stamina.

"item:4388:::::::210677200:80:105::::::"

The first number is the ItemID for  [Discombobulator Ray]. The eighth number adds the information that this particular item only has 4 uses left and was made by Kirov.

"item:28484:1503::2946:2945::::80:105::::::"

The first number is the ItemID for  [Bulwark of Kings]. The second number (enchantId) is that of +100 HP. The third number denotes an empty blue jewel socket while the fourth and fifth numbers represent yellow jewel sockets occupied by a Inscribed Ornate Topaz and a Bold Ornate Ruby respectively. Jewel sockets can also take normal enchantID's. Bulwark of Kings has a socket bonus, but this is not represented within the itemString.

Suffix IDs

Suffix with a positive ID from Burning Crusade Classic, obtained during Classic.

"|cff1eff00|Hitem:9849::::::776:661453184:33::::::::|h[Conjurer's Hood of the Owl]|h|r"

Post-2.0 suffix with a negative ID from Burning Crusade Classic.

"|cff1eff00|Hitem:6267::::::-9:1379794946:33::::::::|h[Disciple's Pants of the Owl]|h|r"

Artifacts

For the Holy Priest Artifact  [T'uure, Beacon of the Naaru]

"|cffe6cc80|Hitem:128825::140844:140839:152044::::53:257::9:2:739:1522:2:8:749:24:1:3:3520:1472:3337:3:3520:1472:3337:3:3610:1472:3528:|h[T'uure, Beacon of the Naaru]|h|r"
 0: "item"
 1: 128825 -- itemID
 2:        -- enchantID
 3: 140844 -- gemID1
 4: 140839 -- gemID2
 5: 152044 -- gemID3
 6:        -- gemID4
 7:        -- suffixID
 8:        -- uniqueID
 9: 53 	   -- linkLevel
10: 257    -- specializationID (Holy)
11:        -- modifiersMask 
12: 9      -- context
13: 2 	   -- numBonusIDs
14: 739    -- bonusID1
15: 1522   -- bonusID2
16: 2      -- numModifiers
17: 8      -- modifierType1 (ITEM_MODIFIER_ARTIFACT_APPEARANCE_ID)
18: 749    -- modifierValue1 (ArtifactAppearanceID)
19: 24     -- modifierType2 (ITEM_MODIFIER_ARTIFACT_TIER)
20: 1      -- modifierValue2
21: 3      -- relic1NumBonusIDs
22: 3520   -- relic1BonusID1
23: 1472   -- relic1BonusID2
24: 3337   -- relic1BonusID3
25: 3      -- relic2NumBonusIDs
26: 3520   -- relic2BonusID1
27: 1472   -- relic2BonusID2
28: 3337   -- relic2BonusID3
29: 3      -- relic3NumBonusIDs
30: 3610   -- relic3BonusID1
31: 1472   -- relic3BonusID2
32: 3528   -- relic3BonusID3
33:

Inspecting

You can inspect a hyperlink from the in-game chat window

/dump "[Red Winter Hat]"
> "|cff1eff00|Hitem:21524::::::::53:257::::::::|h[Red Winter Hat]|h|r"

From an addon, when clicking a hyperlink in-game

hooksecurefunc("SetItemRef", function(link, text)
	print(text:gsub("|", "||"))
	for k, v in pairs({strsplit(":", link)}) do
		if #v > 0 then
			print(k-1, v)
		end
	end
end)

"|cff1eff00|Hitem:21524::::::::53:257::::::::|h[Red Winter Hat]|h|r"
0, "item"
1, "21524"
9, "53"
10, "257

Patch changes

• Patch 7.0.3 (2016-07-19): Lone 0's in item strings have been removed so something like ":0:0:0:" has become "::::". 3 new segments have also been added to the end of the item string but their use is unknown at this time.
  
• Patch 3.0.2 (2008-10-14): Added linkLevel
  
• Patch 2.0.1 (2006-12-05): Added gemID