Seija-Printer
Seija-Printer is a free, open-source Minecraft mod that places blocks and fluids from a schematic in-game.
What Seija-Printer is
Seija-Printer is a free, open-source Minecraft mod that places blocks and fluids from a schematic in-game. It simulates placement on the client and compares selected block-state properties with the schematic to choose the intended state. It requires Meteor Client and Litematica. With suitable configuration, it can place blocks in midair and handle states that differ from the player’s facing direction on servers without anti-cheat plugins. Its options also include face-detection and ray-tracing checks for servers with anti-cheat. Block replacement lets a player use custom blocks instead of schematic blocks; Bridge mode attempts to add supports beneath suspended blocks, and Surface mode prints a selected number of outer schematic layers. The README warns that simulation can strain performance and a large placement range may crash the game. Fluid placement is described as unstable, with a recommendation to enable it after construction. The maintainer says the project is close to semi-discontinued but will try to adapt it to newer Minecraft versions. Its license permits use and source modification, with restrictions on commercial use and paid modpacks.
Good
- Automatically places blocks from a schematic.
- Block replacement supports custom blocks.
- Bridge mode attempts to support suspended blocks.
- Surface mode targets selected outer schematic layers.
Watch out
- Requires Meteor Client and Litematica.
- Simulation can affect performance or crash the game.
- Fluid placement is unstable.
- Maintainer describes the project as close to semi-discontinued.
Who it suits
Seija-Printer may suit Minecraft players who use Meteor Client and Litematica and want to build from schematics in-game. Its configuration options may also appeal to players adjusting placement behavior for different server settings.
Verdict
Seija-Printer offers several schematic placement modes, but depends on Meteor Client and Litematica. Its performance warnings, unstable fluid placement, and uncertain development status are important considerations.
Plans and prices
From Seija-Printer's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Seija-Printer | Free | Open-source Minecraft mod; requires Meteor Client and Litematica |
The facts
Each one read from Seija-Printer's own pages, with the date it was checked.
What it does
- Anti-cheat settings
- For servers with anti-cheat, it provides face-detection and ray-tracing restrictions that the README describes as configurable to bypass printing restrictions.checked 5 Oct 2026
- Block replacement
- A block replacement feature lets users print schematic blocks using custom replacement blocks.checked 11 Oct 2026
- Block states
- It simulates block placement locally and compares selected properties with the schematic to place the intended block state.checked 5 Oct 2026
- Bridge mode
- Bridge mode attempts to place support blocks around blocks floating in the air so they can be printed.checked 11 Oct 2026
- Dependencies
- The mod requires Meteor Client and Litematica.checked 11 Oct 2026
- Development status
- The maintainer says the project is close to semi-discontinued but they will try to adapt it to newer Minecraft versions.checked 11 Oct 2026
- Downloads
- The repository’s tags page lists downloadable source archives for Minecraft versions including mc26.2, mc26.1.2-1, and mc1.21.11-2.checked 11 Oct 2026
- Fluid limit
- Fluid placement is described as unstable and prone to placing fluids in the wrong locations; the README recommends enabling it after construction is complete.checked 5 Oct 2026
- Fluid limitation
- Fluid placement is described as unstable, and the README recommends enabling it after construction is complete.checked 11 Oct 2026
- License and use
- The README permits using and modifying the mod but prohibits selling it for profit, using its source in closed-source or commercial projects, and bundling it in paid modpacks.checked 11 Oct 2026
- Performance limit
- The README warns that simulated placement is performance intensive and that a large block placement distance can crash the game.checked 5 Oct 2026
- Performance limitation
- The README warns that simulation is performance intensive and that a large block placement range may crash the game.checked 11 Oct 2026
- Placement simulation
- It simulates block placement on the client and compares selected block-state properties with the schematic.checked 11 Oct 2026
- Project status
- The maintainer says the project is close to semi-discontinued but will try to adapt it to newer Minecraft versions.checked 5 Oct 2026
- Purpose
- Seija-Printer is an advanced Litematica printer for Minecraft that automatically places schematic blocks and fluids and attempts to correct blocks with the wrong state.checked 11 Oct 2026
- Server behavior
- With suitable configuration, it can place blocks in midair and handle block states that do not match the player’s facing direction on servers without anti-cheat plugins.checked 5 Oct 2026
- Server options
- Configuration includes options for air placement and block states that do not match the player’s facing direction, along with face and raycast checks for servers with anti-cheat.checked 11 Oct 2026
- Support guidance
- The README’s troubleshooting advice includes checking block replacement and raycast/air-placement settings, slowing print speed, and adjusting settings for anti-cheat.checked 11 Oct 2026
- Surface mode
- Surface mode prints blocks only on the schematic surface, up to a specified number of layers.checked 11 Oct 2026
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