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Block Outline FXMinecraft mod

Block Outline FX is a client-side Fabric mod for Minecraft 1.21.4 that upgrades the vanilla block outline with fully configurable visuals.

client only
Latest version
1.0.0
Minecraft
no version declared
Java
follows the game
Loaders
none declared
Licence
MIT
Downloads
768
Updated
8 mo ago
Available on
Modrinth

Download

From Block Outline FX’s own host. Nothing is re-hosted here.

Most recently published release

1.0.0release9 Mar 2026

blockfx-1.0.0.jar · 1.1 MB · for 1.21.4 · Fabric

Download this release
fedb4d068706…

Frequently asked

Do I need to install Block Outline FX 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.

What licence is Block Outline FX 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 Block Outline FX?

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 Block Outline FX 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.

Which Minecraft versions does Block Outline FX work on?

The author has not declared a supported version in the metadata we sync, so there is nothing here we can state as fact. Check the project's own page before installing it, and treat an old mod with no declared version as untested on modern Minecraft.

Details from Modrinth, where the author last updated it on 9 Mar 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Not indexed yet. Score 42 against a threshold of 55. The page still exists and is still linked; it simply carries noindex until we hold more.

Is this information wrong or missing something? .