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FilesJSMinecraft mod for 1.21.4

Allow you to use kubejs for some restrictive operations on files

client and servernewest supported release 1.21.4Game MechanicsManagement
Latest version
1.3
Loader
Forge
Licence
MIT
Downloads
65.8k
Updated
20 mo ago
Available on
Modrinth
Space NodeOur hosting

Host FilesJS servers

One click and FilesJS is installed with the right loader, on hardware built for it.

  • 1.21.4
  • Forge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.4Forge21+declared3 Dec 2024
1.21.3Forge21+declared23 Oct 2024
1.21.2Forge21+declared22 Oct 2024
1.21.1Forge21+declared8 Aug 2024
1.21Forge21+declared13 Jun 2024
1.20.6Forge21+declared29 Apr 2024
1.20.5Forge21+declared23 Apr 2024
1.20.4Forge17+declared7 Dec 2023
1.20.3Forge17+declared4 Dec 2023
1.20.2Forge17+declared20 Sept 2023
1.20.1Forge17+declared12 Jun 2023

Download

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

For Minecraft 1.21.4

Choose the loader you use before downloading.

  • Forge

    1.2.3 · 13 Dec 2024 · Files JS-1.20.1-1.2.3.jar

    Get Forge

Most recently published release

1.3release2 Mar 2025

Files JS-1.20.1-1.3.jar · 0.2 MB · for 1.20.1 · Forge

Download this release
26b4c363602c…
Older versions3
  • 1.2.313 Dec 20241.21.4, 1.21.3, 1.21.2, 1.21.1, 1.21 +6 more0.2 MB8.9k downloads0a1166924520…Get
  • 1.2.211 Dec 20241.20.10.2 MB80 downloads8ff78d5d2ee4…Get
  • 1.19 Dec 20241.20.10.2 MB94 downloads16877a0525a8…Get

Frequently asked

Does FilesJS work on Minecraft 1.21.4?

Yes. 1.21.4 is the newest Minecraft version FilesJS 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 FilesJS support?

Everything the author has declared, from 1.20.1 up to 1.21.4. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install FilesJS on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does FilesJS support?

Forge. 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 FilesJS?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is FilesJS 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 FilesJS?

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 FilesJS 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. When available, recorded download links go to the source for that release; verify the publisher, filename and any available 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 2 Mar 2025. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .