Stable Creation Tools v1.9.1

Pack Merger

Intelligently merge multiple resource packs into one optimised pack.

Stable · Released and maintained — v1.9.1 for 1.21–1.21.11 and 26.x. Visual in-game merger with conflict scanner, per-asset resolution, and a /packmerge command suite.

Why it exists

Purpose

Running many resource packs means manual load order, visual conflicts, and wasted texture slots. Pack Merger combines packs into a single optimised pack while automatically resolving conflicts — so you get the best of every pack without the clashes.

Who it's for

Resource pack users, texture artists, content creators, and server owners curating a consistent look.

Key capabilities

Intelligent merge engine

BFS/diff-based conflict detection finds and classifies every collision.

Automatic conflict resolution

Deterministic resolution rules decide which pack wins per asset.

In-game GUI

A visual screen for selecting packs and reviewing merges before export.

Version-correct export

Exports with the correct pack_format for the target Minecraft version.

Features

Everything Pack Merger does

8 features across 5 categories — all real, all working.

Merge Engine 2 features

Intelligent merging

Combines multiple resource packs into a single optimised pack — originals are never changed.

Automatic resolution

Deterministic rules decide which pack wins per asset during the merge.

Conflict Detection 2 features

Collision scanning

BFS/diff-based conflict detection finds and classifies every collision across packs.

Per-asset control

Keep/Lost/Use choices per asset, bulk resolution by category, and Resolve All by priority.

In-Game GUI 2 features

Visual merger screen

Add packs in priority order and review detected conflicts in the GUI before export.

No ZIP tools needed

Merging and export happen entirely in-game.

Command Suite 1 feature

/packmerge commands

Import, list, conflicts, strategy, resolve, merge and clear for server-side, headless use.

Version-Correct Export 1 feature

pack_format baked in

Exports with the correct pack_format for the target Minecraft version (1.21–1.21.11 and 26.x).

Getting Started

How to use Pack Merger

Install the Pack Merger mod on the Minecraft version you target.
Open the Pack Merger screen from the main menu.
Add resource packs in your preferred priority order.
Review the detected conflicts in the GUI.
Export the merged pack and apply it from the Resource Packs screen.

View the full Pack Merger tutorial →

Compatibility

Versions & loaders

Property	Value
Loader / platform	Fabric
Latest version	1.9.1
Minecraft versions	1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 26.1, 26.1.1, 26.1.2, 26.2

26.x builds use bundled mappings and are experimental.

Version history

Changelog

1.9.1

2026-07-20 Release Latest

GUI & export refinements

Expanded version matrix to 1.21.11 and 26.x
Conflict scanner improvements
Headless /packmerge command suite

Warning. 26.x builds are experimental

Fixed: exported packs could carry stale pack_format on some versions

Roadmap

Where it's going

Merge engine & GUI

done

Core merging with in-game GUI.

Smart conflict previews

Visual before/after previews of resolved conflicts.

Headless CLI

later

Server-side and scripted merging.

FAQ

Questions, answered

Does it modify my original packs?

No — originals are untouched; a new merged pack is exported.

Can I control conflict resolution?

Yes — per-asset Keep/Lost/Use choices, bulk resolution by category, and Resolve All by priority.

What versions are supported?

1.21 through 1.21.11, with 26.x builds.

Do I need ZIP tools?

No — merging and export happen entirely in-game, with the correct pack_format baked in.

Is there a headless option?

Yes — the /packmerge command suite supports import, list, conflicts, strategy, resolve, merge and clear for server-side use.

Can I undo an export?

Your source packs are never changed, so you can re-merge any time.

Compatibility & limitations

What to know

Compatibility. 26.x builds use bundled mappings and are experimental.

Status. Released and maintained — v1.9.1 for 1.21–1.21.11 and 26.x. Visual in-game merger with conflict scanner, per-asset resolution, and a /packmerge command suite.

Downloads

Get Pack Merger

1.9.1 is the current release.

Fabric mod JAR View Tutorial

Ecosystem

Part of something bigger

Every Hero Studios product is engineered to work with the rest of the ecosystem — one design language, one performance bar, one long-term vision. Pack Merger belongs alongside these tools.