
ReplaceBlocksMod
Some handy easy-to-use commands to solve Minecraft's annoyances
Screenshots

About this Mod
ReplaceBlocksMod
A utility mod that lets you replace blocks with other blocks, used entirely
through the console.
The provided commands are intended to be more convenient than using the
vanilla /fill command.
Commands
1. /replace <sourceBlock> with <targetBlock>
Replaces all nearby instances of sourceBlock with targetBlock.
e.g. /replace oak_planks with cherry_planks
In Vanilla, this would be equivalent to/fill ~-50 ~-10 ~-50 ~50 ~10 ~50 oak_planks replace cherry_planks
which is much more difficult to type and fails anyway because
the /fill command can't handle that many blocks.
2. /removegrass
Removes all nearby short grass and long grass.
Regular grass blocks will not be removed.
In Vanilla, this would be similar to (but more optimized than)/fill ~-50 ~-10 ~-50 ~50 ~10 ~50 air replace short_grass
and /fill ~-50 ~-10 ~-50 ~50 ~10 ~50 air replace tall_grass
but again, the /fill command can't handle that many blocks.
Suggestions for more commands are welcome! File an issue at https://github.com/adil192/ReplaceBlocksMod
Available Versions
How to Install ReplaceBlocksMod on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.5).
Install Mod
Open the mod browser in the dashboard and search for "ReplaceBlocksMod". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.5, 1.21.4, 1.21.3 (+10 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
ReplaceBlocksMod server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.5). You can switch loaders with one click in the panel.
Is ReplaceBlocksMod compatible with fabric?
ReplaceBlocksMod officially supports fabric for Minecraft 1.21.5, 1.21.4, 1.21.3. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with ReplaceBlocksMod – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if ReplaceBlocksMod consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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