CurseForge · Minecraft mod
HeartDev
This library allows developers to easily access the health bar rendering system
Quick answer
Which HeartDev release should I use?
heartdev-1.1.3-neoforge21.4.jar targets 1.21.4 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is HeartDev required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does heartdev-1.1.3-neoforge21.4.jar need?
heartdev-1.1.3-neoforge21.4.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add HeartDev without breaking your instance.
Built for heartdev-1.1.3-neoforge21.4.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use heartdev-1.1.3-neoforge21.4.jar. It targets 1.21.4 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside heartdev-1.1.3-neoforge21.4.jar. It opens that exact file at the source.
About this project
What does HeartDev add?

Disclaimer: This library takes inspiration form the Colorful Hearts mod, from which I used the rendering system to understand the rendering of the hearts, after that a revisited the rendering system to match my needs. Even though there was no collaboration, i respect the license system and therefore i want to credit the amazing job of other developers that let their mod open source and that made this one possible. Here is an insight of the Colorful Hearts:
- Mod name: Colorful Hearts [-> Link to the MOD]
- Mod License: MIT license (on 16/06/2025 for 1.21.1)
- Mod author: Terrails [-> Link to his PROFILE]
This Library allows developers to easily access the render health bar system, overriding textures and hearts behavours.
It is possible to change the behavior and textures of hearts and the health bar, dynamically and, with a little setup, also simply.
The library provides some effects that can be activated, thus changing the appearance of the hearts, so that you can easily test them.
Finally, textures are provided that can be used for testing or to create your desired heart bar.
--- The full wiki is available! (Needs a re-check, to know more read heartdev-1.0.5 changelog)
!Wiki error: solved!
|| For any bug or concerns, please post a comment on the CurseForge comments page, describing the bug, the Minecraft version and the NeoForge version (if possible). I'll be fixing the bug as soon as possible!!
|| If you want this library to be available on multiple versions, pls write a comment asking that particular verion, since i will probably only update the mod for the main versions availble, by default.
HeartDev Trailer
Project description from CurseForge.
Pick your setup
HeartDev by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.3
1 loader build1.21.2
1 loader build1.21.1
1 loader build1.21
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
HeartDev versions and loaders
1.1.3.4.1-devonly21.0-21.1
heartdev-1.1.3.4.1-devonly21.0-21.1.jar
17 May 2026
1.1.3.11-devonly21.0-21.1
heartdev-1.1.3.11-neoforge-main21.0-21.1.jar
16 Nov 2025
1.1.3.9-devonly21.0-21.1
heartdev-1.1.3.9-neoforge-main21.0-21.1.jar
20 Oct 2025
1.1.3.8-devonly21.0-21.1
heartdev-1.1.3.8-neoforge-main21.0-21.1.jar
28 Sept 2025
1.1.3.7-devonly21.0-21.1
heartdev-1.1.3.7-neoforge-main1.20-main1.21.jar
25 Sept 2025
1.1.3.6-devonly21.0-21.1
heartdev-1.1.3.6-neoforge-main1.20-main1.21.jar
19 Sept 2025
1.1.3.4-devonly21.0-21.1
heartdev-1.1.3.4-neoforge-main1.20-main1.21.jar
18 Aug 2025
1.1.3.3-devonly21.0-21.1
heartdev-1.1.3.3-neoforge-main1.20-main1.21.jar
18 Aug 2025
1.1.3.2-devonly21.0.21.1
heartdev-1.1.3.2-neoforge-main1.20-main1.21.jar
14 Aug 2025
1.1.3.1-devonly21.0-21.1
heartdev-1.1.3.1-neoforge-main1.20-main1.21.jar
14 Aug 2025
heartdev-1.1.3-neoforge21.4.jar
13 Jul 2025
heartdev-1.1.3-neoforge21.2-21.3.jar
13 Jul 2025
Looking for an older file? The official CurseForge project page is in Resources.