World Size Display
by Astralis
World Size Display shows how much disk space each saved world takes up, directly on the world selection screen, so a save can be judged before it is loaded.
What it does
On the world selection screen the size of each world appears next to its name, in KB, MB or GB depending on the amount, and the unit switches automatically as a world grows or shrinks. The size stays visible when the entry is hovered over or selected, so it can be read without opening the world.
The mod is a Fabric client mod that needs Fabric API and touches only the client. A server does not need it, and players on a server that does not run it see nothing different. It is released under the MIT License and is open source, with source code and an issue tracker linked from the project.
Files target 1.21.11 only, with the single build 1.0.0 for 1.21.11 published on 2026-02-26. The mod was first published and last updated on the same day.
Key features
Size next to the world name
Each world's size is drawn beside its name on the world selection screen, so storage use is visible at a glance.
Automatic unit scaling
The size is shown in KB, MB or GB, with the unit chosen automatically from the size of the save.
Persistent hover and selection
The size remains on screen when a world is hovered over or selected, so the figure is not lost when the cursor moves.
Readable before loading
Because the figure is shown in the list itself, a large save can be spotted before it is opened.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Clearing disk space
A player checking which saves take up the most room can compare the sizes listed on the selection screen and decide which worlds to delete.
Spotting oversized worlds
A player who keeps many worlds can find an unusually large save before loading it, which helps when a slow load is expected.
Who it’s for: The mod suits single-player players who keep several worlds and want to see their disk use on the selection screen. It is not needed on servers, since it only changes the client.
Questions
Does World Size Display need Fabric API?
Does the server need World Size Display?
Which loader and version does the mod support?
More from Astralis
What the author says
Always know how big your worlds are before loading them! Please include: - Minecraft version - Mod version - Other installed mods - Steps to reproduce the issue
Official listing
- Modrinth page
- modrinth.com/mod/world-size-display
- Owner
- Astralis
- Published
- 2026-02-26
- Updated on Modrinth
- 2026-02-26
- Facts verified
- 2026-10-15