Leaveslab「树叶台阶实验室」
by edeipici
Leaveslab automatically creates slab variants for most full blocks in the game, so players no longer need to craft each slab by hand.
What it does
Once installed, the mod generates a slab for each block it can handle, whether it comes from vanilla or from another mod. Slab textures are taken from the top, bottom and side faces of the original block, so the slab matches its source. Lower, upper and double slabs are supported, and placed slabs behave like vanilla ones, including bottom and top halves and double-height blocks.
The mod listens for blocks registered while the game runs, so blocks added by other mods later in a session also receive slabs. A filter skips blocks with special properties, such as tile entities like chests and furnaces, to avoid logical conflicts. Slabs are added to the creative inventory and receive crafting recipes. Leaveslab is built on the Fabric loader and needs Fabric API for model loading. It is released under the MIT License and is not open source. Files are published for Fabric only, for 1.20.1.
Key features
Automatic slab variants
Slabs are generated for full opaque blocks and given the same options as vanilla slabs, with creative entries and recipes.
Texture extraction
Top, bottom and side textures are taken from the original block, so the slab looks like its source.
Lower, upper and double slabs
Each generated slab can be placed as a bottom half, a top half or a double-height block, as with vanilla slabs.
Dynamic block detection
Blocks registered by other mods during play are picked up and given slabs automatically.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Building with modded blocks
A builder who uses blocks from several mods can get slab versions of them without crafting each one separately.
Who it’s for: Players who build with large sets of blocks from other mods and want matching slabs without manual crafting.
How it compares
Slabify is a Fabric mod for 1.20.6, released under the GNU General Public License v3.0 only and open source. Slabs & Layers+ covers 1.20 – 1.20.4, is under All rights reserved and is not open source. Vertical slabs covers 1.20.5 – 26.3 under the MIT License and is open source. Leaveslab uses the MIT License too, but it is not open source and only targets 1.20.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Leaveslab「树叶台阶实验室」 | Fabric | 1.20.1 | Client and server | 2026-09-06 |
| Slabify | Fabric | 1.20.6 | Client and server | 2024-05-19 |
| Slabs & Layers+ | Fabric | 1.20 – 1.20.4 | Client and server | 2023-12-09 |
| Vertical slabs | Fabric | 1.20.5 – 26.3 | Client and server | 2026-09-16 |
Questions
Does Leaveslab need Fabric API?
Does Leaveslab have to be installed on both sides?
Are slabs created for blocks from other mods?
Which game versions does Leaveslab support?
In the catalog
Leaveslab「树叶台阶实验室」 is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 34,764 mods support Minecraft 1.20.1.
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What the author says
Leaveslab is a lightweight Fabric mod that automatically creates slab variants for almost every full block in the game — whether they come from vanilla or other mods. You no longer need to manually craft or rely on other mods to get a slab for a specific block. As long as the block is full and opaque, Leaveslab…
Official listing
- Modrinth page
- modrinth.com/mod/leaveslab
- Owner
- edeipici
- Published
- 2026-08-28
- Updated on Modrinth
- 2026-09-06
- Facts verified
- 2026-10-15