Shulker Packer Mod
by Antara89
Shulker Packer Mod lets players pack items directly into shulker boxes and automate that packing with hoppers and redstone, using two compact blocks.
What it does
Two compact blocks in this mod handle shulker boxes automatically. Shulker boxes are normally placed in the world to hold items, which ties them to one spot.
Both blocks work without a GUI, so no menu is needed to use them. Empty shulker boxes can be fed through a hopper, items can be packed into a shulker box without placing it, and full packed shulker boxes can be ejected to an adjacent chest. A comparator can read the stored contents, reporting how many item stacks are occupied and how full they are.
The mod is published for Fabric only, for 1.21.1, under the MIT License. It runs on the client and the server, so both need it. Its design favors plain hopper and redstone behavior over a custom interface.
Key features
Packing without placing
Items can be packed directly into a shulker box item in the hand, without placing the box in the world.
Hopper-driven packing
A hopper can empty empty shulker boxes into the block, and the packed result can be ejected through another hopper or to a side chest.
Comparator output
A comparator reads a signal based on the number of occupied stacks and their fullness, so one full stack of dirt and one dirt item both count as one occupied slot.
Redstone control
Back-face power pauses hopper insertion and extraction, and the output can be locked, delayed or synchronized with larger redstone systems.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Portable storage rooms
Shulker boxes stay loose items that can be moved, so a storage room does not need each box placed in the world.
Who it’s for: Players who run hopper-based storage, sorting or farm systems and want shulker boxes handled by automation rather than by hand. Server owners can use the same blocks to keep bulk item systems predictable.
How it compares
Selective Slots is open source under the MIT License, works for 1.21.11 and runs on the client and server. NewifyShulker is open source under the CC0 1.0 Universal license, is for 1.20.1 and is server-side only. Shulkernity is not open source, is covered by All rights reserved, and is server-side only for 1.21 – 26.3.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Shulker Packer Mod | Fabric | 1.21.1 | Client and server | 2026-05-14 |
| Selective Slots | Fabric | 1.21.11 | Client and server | 2026-05-16 |
| NewifyShulker | Fabric | 1.20.1 | Server-side only | 2026-06-09 |
| Shulkernity | Fabric | 1.21 – 26.3 | Server-side only | 2026-10-11 |
Questions
Does Shulker Packer Mod need to be installed on the server?
Which Minecraft version does Shulker Packer Mod support?
Can the mod be used without a GUI?
In the catalog
Shulker Packer Mod is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 32,366 mods support Minecraft 1.21.1.
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What the author says
Shulker Packer Mod adds two compact automation blocks for working with shulker box items: the Shulker Packer and the Shulker Unpacker. They are made for hopper-based storage rooms, farms, sorters, and bulk item systems where shulker boxes should stay as portable items instead of being placed in the world. Both blocks…
Official listing
- Modrinth page
- modrinth.com/mod/shulkerpackermod
- Owner
- Antara89
- Published
- 2026-05-08
- Updated on Modrinth
- 2026-05-14
- Facts verified
- 2026-10-15