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InventoryStacks
InventoryStacks allows you to customize the maximum amount of any item in a single stack. Whether you want to increase the stack size of potions, buckets, totems, or weapons, this plugin gives you total control. It can bypass the default maximum of 64 items, allowing for more efficient inventory management across your server.
⭐ Key Features
- Custom Stack Limits: Set specific stack sizes for any item type.
- Global Stack Control: Optionally set a global stack limit for all items in the game, with a whitelist for exceptions.
- Intelligent Drop Stacking: Automatically merges nearby dropped items into a single stack. This significantly reduces entity counts, saves server memory, and keeps gameplay running smoothly.
- Cross-Platform Support: Fully compatible with Spigot, Paper, Purpur, and Folia.
- Geyser Integration: Works seamlessly with Geyser + Floodgate for Bedrock players.
- Advanced Handling: Includes legacy reflection-based stack handling option for newer Minecraft versions (1.20.5+).
✏️ Commands
/stack
- Description: Stack all the items in your inventory.
- Permission: STACKS.COMMAND
/stacks reload
- Description: Reloads the plugin configuration.
- Permission: STACKS.RELOAD
✏️ Permissions
- STACKS.*: Grants access to all plugin commands and features.
- STACKS.RELOAD: Allows the user to reload the configuration file.
- STACKS.COMMAND: Allows the user to use the /stack command.
- STACKS.USE: Allows the player to benefit from custom stack limits. (Only required if use-permission is true in your config).
✅ Supported Versions
1.7 – 1.20.3: Up to 127 items per stack. 1.20.6 – Latest: Up to 99 items per stack.
⚡ Screenshots
✔️ Support & Community
We are committed to helping you keep your server running smoothly. If you encounter any bugs, have feature requests, or need assistance, join our community on Discord.
Search Tags
128 stack size, minecraft stack sizes, changing stack amount, increase 64 stack, snowball stack size, potion stack size, stackable, enderpearl stack size, increase 16 stack, minecraft item amount, change item stack amount, change item amount, item sizes, unlimited stack sizes
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All Versions
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[3.7.3] All Items Console Messages
by CodingGuru1968 on Oct 15, 2026
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+ Changed "max-stack-for-all-items" to no longer spam console unless debug mode enabled.
[3.7.2] Important Shulker Box Fix
by CodingGuru1968 on Oct 15, 2026
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+ Fixed when inserting multiple stacked damageable items into Shulker boxes.
+ Fixed when inserting a stacked damageable item that has already been edited.
+ Added messages for when trying to insert illegal items into Shulker boxes.
+ Fixed when inserting a stacked damageable item that has already been edited.
+ Added messages for when trying to insert illegal items into Shulker boxes.
[3.7] Important Smithing Table Fixes
by CodingGuru1968 on Oct 15, 2026
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+ Fixed when inserting multiple stacked damageable items into smithing tables.
+ Fixed when inserting a stacked damageable item that has already been edited.
+ Fixed when inserting a stack greater than 64 into smithing tables.
+ Added messages for when trying to insert illegal items into smithing table.
+ Fixed when inserting a stacked damageable item that has already been edited.
+ Fixed when inserting a stack greater than 64 into smithing tables.
+ Added messages for when trying to insert illegal items into smithing table.
[3.6.3] 26.3 Support
by CodingGuru1968 on Oct 15, 2026
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+ Added support for version 26.3.
[3.6.2] Hologram Manager Improvements
by CodingGuru1968 on Oct 15, 2026
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+ Improved method references in ItemHologramManager.
+ Improved scheduler usage in ItemHologramManager.
+ Improved scheduler usage in ItemHologramManager.
[3.6.1] Config Rework
by CodingGuru1968 on Oct 15, 2026
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+ Fixed language not being set in the config.yml file.
+ Reworked the config.yml file to be more readable, broken into sections and have important links.
+ Reworked the config.yml file to be more readable, broken into sections and have important links.
[3.6] Anvil Upgrade + Language and more
by CodingGuru1968 on Oct 15, 2026
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+ Added an option to whitelist items in an anvil.
+ Added two separate sections for slot 1 and 2 inside the anvil.
+ Added a migration module for old lang.yml files.
+ Added new languages: Spanish, French, German, Russian.
+ Added language setting in the config.yml to preload messages.
+ Improved the message model used by the plugin.
+ Improved the command model used by the plugin.
+ Improved singleton instances and readability throughout plugin.
+ Moved adventureAPI to messages to clean up main class.
+ Fixed not having WorldGuard load on start-up.
+ Fixed config "items" section resetting with the new config updater.
+ Added two separate sections for slot 1 and 2 inside the anvil.
+ Added a migration module for old lang.yml files.
+ Added new languages: Spanish, French, German, Russian.
+ Added language setting in the config.yml to preload messages.
+ Improved the message model used by the plugin.
+ Improved the command model used by the plugin.
+ Improved singleton instances and readability throughout plugin.
+ Moved adventureAPI to messages to clean up main class.
+ Fixed not having WorldGuard load on start-up.
+ Fixed config "items" section resetting with the new config updater.
[3.5.1] Anvil + Brewing Stand Fix
by CodingGuru1968 on Oct 15, 2026
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+ Fixed being able to shift click stacks into anvil.
+ Fixed some unnecessary code for brewing stands (versions above 1.20).
+ Added more advanced anvil logic to allow right-clicking one item.
+ Fixed some unnecessary code for brewing stands (versions above 1.20).
+ Added more advanced anvil logic to allow right-clicking one item.
[3.5] Anvil Click + Config Fix
by CodingGuru1968 on Oct 15, 2026
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+ Cleaned up some unnecessary totem logic.
+ Added better logic for "disallow-stacked-anvil-items" which now disallows any placement.
+ Moved "disallow-stacked-anvil-items" out of legacy section from config.
+ Fixed config.yml file resetting on startup.
+ Added better logic for "disallow-stacked-anvil-items" which now disallows any placement.
+ Moved "disallow-stacked-anvil-items" out of legacy section from config.
+ Fixed config.yml file resetting on startup.
[3.4.3] Older Version Totem Fix
by CodingGuru1968 on Oct 15, 2026
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+ Fixed an error with totem of undying on server versions less than 1.11.
[3.4.2] Auto Config Updater
by CodingGuru1968 on Oct 15, 2026
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+ Added support for an auto-config updater.
[3.4.1] Reload + Minimessage Fix
by CodingGuru1968 on Oct 15, 2026
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+ Added /stacks reload to include lang.yml file.
+ Fixed shading minimessage issues in pom.xml file.
+ Fixed shading minimessage issues in pom.xml file.
[3.4] 26.2 Support + Minor Fixes
by CodingGuru1968 on Oct 15, 2026
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+ Added explicit support for version 26.2.
+ Fixed an error message when the version was not supported.
+ Fixed some edge cases where legacy reflection was used on modern version.
+ Slight improvement to performance for legacy reflection check.
+ Removed prefix setting from MessagesUtil.
+ Fixed an error message when the version was not supported.
+ Fixed some edge cases where legacy reflection was used on modern version.
+ Slight improvement to performance for legacy reflection check.
+ Removed prefix setting from MessagesUtil.
[3.3.6] Totem Fixes
by CodingGuru1968 on Oct 15, 2026
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+ Fixed on older versions than 1.11 where totem item didn't exist.
+ Fixed swapping totems into offhand.
+ Fixed not checking if inventory is a players on totem click.
+ Fixed rare cases where "ghost" totem clicks occur and nothing happened.
+ Fixed swapping totems into offhand.
+ Fixed not checking if inventory is a players on totem click.
+ Fixed rare cases where "ghost" totem clicks occur and nothing happened.
[3.3.5] Geyser Changes
by CodingGuru1968 on Oct 15, 2026
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+ Removed some dependencies from plugin.yml as not required.
+ Removed explicit support for geyser as its not required.
+ Removed this entire section from the config file:
``
+ Removed explicit support for geyser as its not required.
+ Removed this entire section from the config file:
``
# Bedrock clients connected through Geyser/Floodgate are more reliable with
# global Material stack sizes than per-item ItemMeta stack size components.
# When TRUE and Geyser/Floodgate is installed, this automatically uses legacy
# reflection stack handling even on Minecraft 1.20.5+.
geyser-support:
auto-use-legacy-reflection: true
[3.3.4] MAJOR TOTEM FIX
by CodingGuru1968 on Oct 15, 2026
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+ Fixed when using left click on totems in offhand and it causing items to be changed into totems.
+ Fixed when using shift click on totems in offhand and it causing items to be changed into totems.
+ Added some extra checks to totem fixes.
+ Fixed when using shift click on totems in offhand and it causing items to be changed into totems.
+ Added some extra checks to totem fixes.
[3.3.3] Minor Fixes
by CodingGuru1968 on Oct 15, 2026
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+ Fixed /stack throwing error on newer mc versions.
+ Fixed offhand totem stacking not working properly with totems.
+ Fixed an NMS Reflection issue (method/field lookup now scans by return type) [courtesy Jessica].
+ Fixed offhand totem stacking not working properly with totems.
+ Fixed an NMS Reflection issue (method/field lookup now scans by return type) [courtesy Jessica].
[3.3.2] Minor Fixes
by CodingGuru1968 on Oct 15, 2026
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+ Added a version check for the bundle fix.
+ Added an edge case where items had already been stackable before and still causing glitches in bundles.
+ Added an edge case where items had already been stackable before and still causing glitches in bundles.
[3.3.1] MAJOR BUNDLE FIX
by CodingGuru1968 on Oct 15, 2026
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+ Added some temporary code that prevents damageable and stackable items from being placed into a bundle.
This was previously causing client crashes and items to be completely lost due to 1.20.5+ changes.
This was previously causing client crashes and items to be completely lost due to 1.20.5+ changes.
- I am currently working on a fix that will allow players to interact with bundles.**
[3.3] Item Stack Merging + Clean up
by CodingGuru1968 on Oct 15, 2026
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+ Added a new item stack merging feature courtesy of CodeNameJessica (they created everything).
+ Added an entire config section dedicated to item stack merging (holograms, radius, timeout, and more).
+ Improved checks for WorldGuard legacy api (instead of server version).
+ Improvements to the /stacks reload command.
+ Slight clean-up to pom.xml file.
+ Massively reduced plugin size.
+ Added an entire config section dedicated to item stack merging (holograms, radius, timeout, and more).
+ Improved checks for WorldGuard legacy api (instead of server version).
+ Improvements to the /stacks reload command.
+ Slight clean-up to pom.xml file.
+ Massively reduced plugin size.
[3.2] Permission Based Stacking
by CodingGuru1968 on Oct 15, 2026
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+ Added a check when enabling WorldGuard to check server version (can only be used on modern API 1.20.5+).
+ Added option for new permission based logic on player stacking, does not include non-player events (can only be used on modern API 1.20.5+).
+ Added config logic for new permission which is disabled by default.
+ Added an additional stack clean up option for players without permission.
+ Added option for new permission based logic on player stacking, does not include non-player events (can only be used on modern API 1.20.5+).
+ Added config logic for new permission which is disabled by default.
+ Added an additional stack clean up option for players without permission.
[3.1] Startup Fixes + WorldGuard Region Support
by CodingGuru1968 on Oct 15, 2026
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+ Added WorldGuard regions to only allow stacking in specific regions.
+ Added WorldGuard option for hopper support (disabled by default to help lag).
+ Added WorldGuard seperate clean up option to fix stacks not inside of regions.
+ Added CodeNameJessica to authors and list of contributors.
+ Fixed an issue with the config file not loading correctly.
+ Fixed an issue with XMaterial not working on latest version.
+ Removed XMaterial as a shaded resource and put inside the code.
+ Improved the pom.xml file to not include XSeries.
+ Added WorldGuard option for hopper support (disabled by default to help lag).
+ Added WorldGuard seperate clean up option to fix stacks not inside of regions.
+ Added CodeNameJessica to authors and list of contributors.
+ Fixed an issue with the config file not loading correctly.
+ Fixed an issue with XMaterial not working on latest version.
+ Removed XMaterial as a shaded resource and put inside the code.
+ Improved the pom.xml file to not include XSeries.
[3.0.1] Version Reference
by CodingGuru1968 on Oct 15, 2026
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+ Updated version reference to latest 26.1.
[3.0] 26.1 Support + More
by CodingGuru1968 on Oct 15, 2026
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Following fixes courtesy of of Szabee13...
+ Updated plugin version to latest spigot version.
+ Added item groups to make it easier to configure the plugin.
+ Added a fix for totem handling in offhand.
+ Added support for Geyser and Floodgate.
+ Fixed cooper and hopper loops causing spam.
Misc...
+ Added Szabee13 to list of authors.
+ Updated plugin version to latest spigot version.
+ Added item groups to make it easier to configure the plugin.
+ Added a fix for totem handling in offhand.
+ Added support for Geyser and Floodgate.
+ Fixed cooper and hopper loops causing spam.
Misc...
+ Added Szabee13 to list of authors.
[2.6.2-BETA] InventoryStacks 2.6.2-BETA
by CodingGuru1968 on Oct 15, 2026
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+ Added a new option "auto-stack-cleanup" which cleans up stacks which aren't listed in config file but have custom stack amount.
+ Cleared up some config values.
+ Made some of the config options more clear and understandable.
+ Slightly improved areas of the code.
+ Removed some shaded dependency files that aren't required.
+ Cleared up some config values.
+ Made some of the config options more clear and understandable.
+ Slightly improved areas of the code.
+ Removed some shaded dependency files that aren't required.
[2.6.1-BETA] Performance Improvement
by CodingGuru1968 on Oct 15, 2026
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+ Slight performance improvement.
[2.6-BETA] Container Visual Fix
by CodingGuru1968 on Oct 15, 2026
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+ Fixed an issue with giving damageable items.
+ Fixed the major issue of container items not displaying correct value for version 1.20.5+.
+ Moved config values around and made it cleaner.
+ Removed a lot of unnecessary classes.
+ Removed a config setting that was never actually used.
+ Added an additional check for number format exception on /give command.
+ Added "use-legacy-reflection" option to config for newer versions.
+ Fixed the major issue of container items not displaying correct value for version 1.20.5+.
+ Moved config values around and made it cleaner.
+ Removed a lot of unnecessary classes.
+ Removed a config setting that was never actually used.
+ Added an additional check for number format exception on /give command.
+ Added "use-legacy-reflection" option to config for newer versions.
[2.5-BETA] Huge Changes + 1.21.11 Support
by CodingGuru1968 on Oct 15, 2026
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+ Updated plugin to version 1.21.11.
+ Added a text file that lists all material types.
+ Added some additional checks to regex.
+ Added config option "prevent-shift-combining-damageable-items" to stop the glitch on 1.8-1.16.
+ Improved the code layout.
+ Improved performance across plugin.
+ Fixed some of the latest material types not working.
+ Fixed a lot of issues with stacking inside of brewing stands.
+ Fixed all blocks for versions 1.8-1.20.
+ Fixed waterlogging dirt removing an entire stack on 1.19+.
+ Fixed emptying a bucket throwing error in 1.8.
+ Fixed emptying a bucket into a cauldron in 1.8.
+ Fixed damageable items being combined with shift on 1.8-1.16.
+ Fixed collisions issues across older versions.
+ Fixed villager trading not working on 1.21.11.
+ Added a text file that lists all material types.
+ Added some additional checks to regex.
+ Added config option "prevent-shift-combining-damageable-items" to stop the glitch on 1.8-1.16.
+ Improved the code layout.
+ Improved performance across plugin.
+ Fixed some of the latest material types not working.
+ Fixed a lot of issues with stacking inside of brewing stands.
+ Fixed all blocks for versions 1.8-1.20.
+ Fixed waterlogging dirt removing an entire stack on 1.19+.
+ Fixed emptying a bucket throwing error in 1.8.
+ Fixed emptying a bucket into a cauldron in 1.8.
+ Fixed damageable items being combined with shift on 1.8-1.16.
+ Fixed collisions issues across older versions.
+ Fixed villager trading not working on 1.21.11.
[2.4.3-BETA] 1.21.4 Update
by CodingGuru1968 on Oct 15, 2026
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+ Added support for spigot version 1.21.4.
+ Added version info when a version is not supported.
+ Fixed a minor issue with the paper jar version being incorrect.
+ Added version info when a version is not supported.
+ Fixed a minor issue with the paper jar version being incorrect.
[2.4.2-BETA] Minor Fix
by CodingGuru1968 on Oct 15, 2026
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+ Fixed an error in console related to anvils.
