Polymer PackSquash

Polymer PackSquash

PackSquash runner for polymer resource packs!

by
1.9K Downloads
fabricmanagementoptimization
Rent Server with this Mod

About this Mod

Polymer PackSquash Integration

This mod integrates PackSquash with Polymer’s resource pack generation to automatically optimize generated resource packs so you don't have to manually compress after changes.

Setup

  • Get the latest PackSquash release.

  • Place the binary here:

    polymer/packsquash
    
  • The mod will automatically create a packsquash.toml in the polymer folder.

These are the default paths the mod will use. You can adjust them in the configuration file config/polymer-squasher.json

Default config

{
  "enabled": true,
  "log-packsquash": false,
  "log-hash-mismatch": false,
  "force-size-based-hash": false,
  "cleanup": false,
  "ignore-hash-paths": [
    "polymer-credits.txt"
  ],
  "packsquash-path": "polymer/packsquash",
  "packsquash-toml-path": "polymer/packsquash.toml",
  "hash-file-path": "polymer/hashes.json",
  "resource-pack-directory": "polymer/pack",
  "minified-zip-path": "polymer/resource_pack.min.zip"
}

Config options

  • enabled — turn the integration on/off.
  • log-packsquash — print PackSquash output to the log.
  • log-hash-mismatch — log when a file’s hash changes (useful for debugging).
  • packsquash-path — path to the PackSquash binary.
  • packsquash-toml-path — path to the PackSquash TOML config file.
  • ignore-hash-paths — list of path prefixes to ignore hash mismatches when hashing.
  • force-size-based-hash — if true, the mod will use file size instead of a full hash (faster, less precise)
  • cleanup - cleans up old files in the cached pack folder

How it works

When enabled, the mod will hash the generated resource pack files. The hashes are written to polymer/hashes.json.

If nothing has changed since the last run, PackSquash is skipped.

If changes are detected, the mod will run PackSquash after Polymer finishes generating the resource pack.

If the process completes successfully, the optimized version is used instead.

Available Versions

Polymer PackSquash 1.1.2+26.1release
MC 26.1, 26.1.1, 26.1.2fabric
March 29, 2026
Polymer PackSquash 1.1.0+1.21.11release
MC 1.21.11fabric
January 6, 2026
Polymer PackSquash 1.0.3+1.21.11release
MC 1.21.11fabric
January 1, 2026
Polymer PackSquash 1.0.2+1.21.9release
MC 1.21.9, 1.21.10fabric
October 7, 2025
Polymer PackSquash 1.0.1+1.21.8release
MC 1.21.6, 1.21.7, 1.21.8fabric
August 11, 2025

How to Install Polymer PackSquash on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1.2).

3

Install Mod

Open the mod browser in the dashboard and search for "Polymer PackSquash". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

26.1.2, 26.1.1, 26.1 (+6 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Polymer PackSquash server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.

Is Polymer PackSquash compatible with fabric?

Polymer PackSquash officially supports fabric for Minecraft 26.1.2, 26.1.1, 26.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Polymer PackSquash – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Polymer PackSquash consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Polymer PackSquash with just one click on your server.

Recommended RAM
4 GBfrom €5.2/mo
Minimum 3 GB | per 8 players
Create Server Now
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NVMe SSD Storage
DDoS Protection included

Details

License
GNU Lesser General Public License v3.0 only
Server-side
Required

Supported Versions

26.1.226.1.126.11.21.111.21.101.21.91.21.81.21.71.21.6