ModsFinder

Region Selection Viewer

by _EugeneFitz_

Region Selection Viewer draws the bounds of a WorldEdit or Axiom selection so a builder can check a large build against its region.

FabricClient-side onlyAll rights reserved1.21.11

What it does

The mod is a Fabric client mod for Minecraft 1.21.11 that shows the outline of a selected region in the world, which helps when a build spans a wide area and the edges are hard to judge by eye. It was made for a personal large-scale building project and then released to other builders.

Region Selection Viewer works alongside WorldEdit CUI and Axiom, and it can be paired with Xaero's Minimap or Xaero's World Map to display selected regions on the map. Axiom Pilot, Item command viewer, Redstone Essentials, Display Entity Studio and Zones are other mods that cover related ground, each with different loaders, versions or sides.

Servers do not need it; each player installs it for their own game. It is released under All rights reserved, so the code is not open source. Files exist for 1.21.11 only, and the latest Fabric build is 0.0.7-alpha+1.21.11, published on 2026-06-05 on the alpha channel.

Key features

  1. Polygon region outlines

    Selected polygon regions are drawn in the world so their edges can be followed while placing blocks.

  2. Overlap check

    Parts of a build that sit outside a WorldEdit region are made visible, so stray blocks can be found.

  3. Map display

    Selected regions can be shown on Xaero's Minimap or Xaero's World Map when those optional mods are installed.

  4. Frequent region switching

    Regions can be switched often during a build, so each boundary can be verified in turn.

Compatibility

Latest build for each game version and loader.

No stable releases
Every published file is a beta or alpha build.
1.21.110.0.7-alpha+1.21.11
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Optional 4

Xaero's MinimapDisplays a map of the nearby world terrain, players, mobs, entities in the corner of your screen. Lets you create waypoints which help you find the locations you've marked.
Optional
WorldEdit CUIWorldEdit CUI is a graphical user interface for WorldEdit, designed to assist in using WorldEdit and prevent accidental errors.
Optional
Xaero's World MapAdds a full screen world map which shows you what you have explored in the world. Works great together with Xaero's Minimap.
Optional
AxiomThe all-in-one tool for editing Minecraft Worlds.
Optional

Use cases

Who it’s for: Builders who work with WorldEdit or Axiom on large, multi-region projects, and who want region edges visible on screen or on a map.

Questions

Does Region Selection Viewer need Axiom or WorldEdit CUI?

No. Axiom, WorldEdit CUI, Xaero's Minimap and Xaero's World Map are optional dependencies, and the mod works with either or both of the selection tools.

Which Minecraft versions does Region Selection Viewer support?

Files exist for 1.21.11 only, so the mod cannot be used on other game versions.

Is the server required to run Region Selection Viewer?

No. It is installed on the player's side alone, so servers need nothing.

In the catalog

Region Selection Viewer is one of 12,078 Decoration mods on ModsFinder, and one of 6,982 Decoration mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Decoration mods12,078Fabric modsMods for 1.21.1119,862

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What the author says

Do you work on massive builds or projects and need an easier way to visualize large selection regions?! (Creepa) Oh man, do I have the solution for you! With Region Selection Viewer being used along-side Xaero's Minimap AND/OR Xaero's World Map beside WorldEditCUI AND Axiom. Which ever you choose should work, and…
_EugeneFitz_, on the Modrinth page

Official listing

Owner
_EugeneFitz_
Published
2026-06-03
Updated on Modrinth
2026-06-05
Facts verified
2026-10-15

Tags

DecorationGame mechanicsUtility
Open on ModrinthCompare