Server Backpacks!
by Rouesvm
Server Backpacks! adds portable storage containers that players wear and open from their inventory, running on the server alone.
What it does
Backpacks come in small, medium, large, ender and global sizes. A small backpack holds 9 slots, a medium one 18 and a large one 27. The ender backpack gives access to the ender chest from anywhere, and the global backpack holds 54 slots whose inventory is shared with other global backpacks it is linked to. Ender pearls dropped on the ground can be used as a link between two global backpacks. A lava backpack clears its first row and moves its contents into the second row.
The mod is server-side only, so players join without installing anything, and it requires Fabric API and Polymer. Polymer is what lets the server send backpack models to clients. Geyser support lets Bedrock players wear backpacks as well; only Java players see them on their back. Server owners can generate the Polymer resource pack with a command, and the zipped pack sits in the server folder for automatic hosting once enabled in the Polymer config. The mod is published for Fabric only, across 17 release versions 1.21 – 26.3, and is open source under the MIT License.
Key features
Four backpack sizes
Small, medium and large backpacks hold 9, 18 and 27 slots, and regular backpacks can be dyed like bundles.
Ender backpack
An ender backpack opens the ender chest from any location, with no need to find the chest in the world.
Linked global backpacks
A global backpack holds 54 slots and shares its inventory with other global backpacks it is linked to through ender pearls dropped on the ground.
Lava backpack and trash backpack
A lava backpack moves its full first row into the second row to free space, and a trash backpack voids the items put into it.
Crafting module
A crafting module adds a crafting grid to the backpack, so items can be crafted without leaving the inventory.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Optional 2
How it compares
Shared Backpack is server-side only, open source under the MIT License and published for Fabric 1.21.5 – 26.1.2. Bird's Backpacks is a client and server mod for Fabric and NeoForge covering 1.21.8 – 26.1.2, and it is not open source. Basic Backpack is client and server, open source under the MIT License and published for Fabric 1.21.1 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Server Backpacks! | Fabric | 1.21 – 26.3 | Server-side only | 2026-09-15 |
| Shared Backpack | Fabric | 1.21.5 – 26.1.2 | Server-side only | 2026-04-21 |
| Bird's Backpacks | Fabric and NeoForge | 1.21.8 – 26.1.2 | Client and server | 2026-07-29 |
| Basic Backpack | Fabric | 1.21.1 | Client and server | 2025-12-25 |
Questions
Does Server Backpacks! need Polymer on the server?
Do players need to install the mod?
How are the Polymer resources delivered?
In the catalog
Server Backpacks! is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 8,071 mods support Minecraft 26.3.
Similar mods
What the author says
A server-sided mod that adds backpacks using Polymer by Patbox Also, Regular backpacks are dyeable like bundles!
Official listing
- Modrinth page
- modrinth.com/mod/serverbacksnow
- Owner
- Rouesvm
- Published
- 2024-08-29
- Updated on Modrinth
- 2026-09-15
- Facts verified
- 2026-10-15