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Crossbow OptimizerMinecraft mod for 1.21.11

Handles crossbow reloading client-side, ensuring servers don't slow down the reloading process

client onlynewest supported 1.21.11TechnologyUtilityEquipmentGame Mechanics
Latest version
1.0.4+1.21.9
Loader
Fabric
Licence
MIT
Downloads
17.6k
Updated
5 mo ago
Available on
Modrinth

Minecraft versions

Every version Crossbow Optimizer declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.11Fabric21+declared9 Dec 2025
1.21.10Fabric21+declared7 Oct 2025
1.21.9Fabric21+declared30 Sept 2025
1.21.8Fabric21+declared17 Jul 2025
1.21.7Fabric21+declared30 Jun 2025
1.21.6Fabric21+declared17 Jun 2025
1.21.5Fabric21+declared25 Mar 2025
1.21.4Fabric21+declared3 Dec 2024
1.21.3Fabric21+declared23 Oct 2024
1.21.2Fabric21+declared22 Oct 2024
1.21.1Fabric21+declared8 Aug 2024
1.21Fabric21+declared13 Jun 2024

Download

From Crossbow Optimizer’s own host. Nothing is re-hosted here.

1.0.4+1.21.9release8 May 2026

CrossbowOptimizer-1.0.4+1.21.9.jar · 1.4 MB · for 1.21.11, 1.21.10, 1.21.9

Download latest
3d3d02c13bc7…
Older versions11
  • 1.0.4+1.21.58 May 20261.21.8, 1.21.7, 1.21.6, 1.21.51.4 MB783 downloads1cd645ca2eed…Get
  • 1.0.4+1.21.28 May 20261.21.4, 1.21.3, 1.21.21.4 MB1.2k downloads7cbf28ab7896…Get
  • 1.0.4+1.218 May 20261.21.1, 1.211.4 MB1.4k downloads59991848b53d…Get
  • 1.0.3+1.21.96 May 20261.21.11, 1.21.10, 1.21.91.4 MB277 downloadsbb02fed85c0c…Get
  • 1.0.3+1.21.56 May 20261.21.8, 1.21.7, 1.21.6, 1.21.51.4 MB22 downloads4afee9ca228b…Get
  • 1.0.3+1.21.26 May 20261.21.4, 1.21.3, 1.21.21.4 MB39 downloadse73fd82659cd…Get
  • 1.0.3+1.216 May 20261.21.1, 1.211.4 MB37 downloads6a57c6b2aa0b…Get
  • 1.0.2+1.21.95 May 20261.21.11, 1.21.10, 1.21.91.4 MB128 downloads5d9b445c185b…Get
  • 1.0.2+1.21.55 May 20261.21.8, 1.21.7, 1.21.6, 1.21.51.4 MB23 downloads2af2379eda85…Get
  • 1.0.2+1.21.25 May 20261.21.4, 1.21.3, 1.21.21.4 MB24 downloads6dca6a46fbac…Get
  • 1.0.2+1.215 May 20261.21.1, 1.211.4 MB26 downloadsbe0f350074ae…Get

Frequently asked

Does Crossbow Optimizer work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version Crossbow Optimizer declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Crossbow Optimizer support?

Everything the author has declared, from 1.21 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Crossbow Optimizer on the client or the server?

The client only. There is nothing to install on the server side. That is the author's declared design, not a guarantee for every server: one running anti-cheat or missing a counterpart mod can still object.

Which platform or loader does Crossbow Optimizer support?

Fabric. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Crossbow Optimizer?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Crossbow Optimizer under?

MIT, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Crossbow Optimizer?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Crossbow Optimizer safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Details from Modrinth, where the author last updated it on 8 May 2026. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .