How do I install ChangeSize?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on Modrinth — not every file is mirrored on our own servers.

What Minecraft version does ChangeSize work with?

The listing gives Minecraft 1.21.5. This is the version stated by the author or source site, not something we verified ourselves.

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DatapacksJava

ChangeSize

Java data pack listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.

by Faurl · on Modrinth

⬇ Download on Modrinth

Open in MC Java Mods Get it on Google Play →

ChangeSize Datapack

This datapack implements a new crafteable device which makes you able to change your size
(affecting speed, health, jump height, etc).

To use, just right-click the device and a "gui" (written book) will pop up. There are 5 modes.

Modes

Titan (scale 10)

Giant (scale 2)

Dwarf (scale 0.6)

Smally Dolly (scale 0.4)

Jumping Ant (scale 0.2)

Example use

example_use1

⚠️ Remember to use your respective version's required resourcepack.

Device recipe:

revice_recipe

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft version listed: 1.21.5
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.

File checked by MCModsHub

Downloads as ChangeSize Datapack 1.3 (1.21.5).zip
Download size: 14 KB
Download link checked 15 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

Explore more

All Datapacks for Java All Minecraft Java mods Java mods for 1.21