
Polymer PackSquash
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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/packsquashThe mod will automatically create a
packsquash.tomlin thepolymerfolder.
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.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 26.1, 26.1.1, 26.1.2
- 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 — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as polymer-squasher-1.1.2+26.1.jar — drop this file into the mods folder
- Download size: 38 KB
- Download link checked 31 Aug 2026 — working
These come from our own check of the pack file, not from the source page.