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This free online tool allows you to convert Modrinth modpack files (.mrpack) to standard ZIP format for Minecraft mods. No installation required - everything happens in your browser.
This tool is designed for Minecraft mod users who need to convert files between different formats for compatibility with various launchers and mod loaders.
Converting a Modrinth package (.mrpack) to a standard ZIP file involves several steps that our tool handles automatically:
Upload your .mrpack file to our tool. The file is processed entirely in your browser and never sent to any server.
Our tool extracts the modrinth.index.json file and analyzes the mod structure, preparing it for conversion to standard ZIP format.
The tool packages all files according to your settings and creates a standard ZIP file ready for download.
Modrinth packages (.mrpack) are special ZIP files containing a JSON index file that describes the mod structure and includes metadata about each file. Key differences:
While MRPACK files are designed to be installed directly through compatible launchers, you can also manually open and extract them if needed:
For advanced users, these commands can directly extract MRPACK files:
# Windows (using PowerShell) Rename-Item "yourpack.mrpack" "yourpack.zip" Expand-Archive -Path "yourpack.zip" -DestinationPath "./extracted" # Linux/macOS mv yourpack.mrpack yourpack.zip unzip yourpack.zip -d ./extracted
Note: Simply opening the MRPACK file won't download the actual mod files. To obtain the mod files, you'll need to either use a compatible launcher or manually download each mod from the URLs listed in the modrinth.index.json file.
MRPACK files don't directly contain the JAR files for your mods, but our converter can help you extract all the JAR files:
Problem: "Cannot open .mrpack file"
Problem: "Missing mods after installation"
Problem: "Corrupted MRPACK file"
Problem: "Unable to convert MRPACK"
Advanced Troubleshooting: If you continue experiencing issues with a specific MRPACK file, you can examine the modrinth.index.json file for invalid entries or corrupted URLs. Often, manually downloading problematic mods and placing them in the correct folders can resolve installation problems.
A .mrpack file is Modrinth's modpack format for Minecraft. It contains a special index file that lists all the mods in the pack along with their metadata and download information.
Some Minecraft launchers or mod managers might not directly support the .mrpack format. Converting to a standard ZIP allows you to use these mods with any launcher that supports regular ZIP files.
Yes, all processing happens entirely in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.
By default, we include the original modrinth.index.json file in the output ZIP. You can choose to exclude it if you don't need the metadata in your converted file.
Unfortunately, this web tool requires an internet connection to load initially. If you enable the "Download mod files" option, it will also need internet access to download the referenced mod files. However, basic file processing happens locally. If you need a fully offline solution, consider using command-line tools like packwiz or specialized mod managers.
When enabled, this option will download all mod files referenced in the modrinth.index.json and include them in the output ZIP. This creates a complete, ready-to-use mod pack that works with launchers that don't support the .mrpack format. Without this option, the output ZIP will only contain files that were already in the .mrpack file (typically just configuration files and resource packs).
| Launcher | Native MRPACK Support | Need ZIP Conversion | Notes |
|---|---|---|---|
| Prism Launcher | Full Support | Not Required | Direct import available |
| MultiMC | Full Support | Not Required | Version 5.0+ supports via "Import from zip" feature |
| Official Launcher | Not Supported | Required | No native support for modpacks |
| CurseForge | Partial Support | Sometimes Required | Primarily designed for .cf format, some mrpack files may need conversion |
| ATLauncher | Full Support | Not Required | Direct import available |
| GDLauncher | Full Support | Not Required | Use import function |
| Technic Launcher | Not Supported | Required | Only supports ZIP format |
| HMCL | Full Support | Not Required | Use "Install Modpack" feature |
| PCL2 | Partial Support | Recommended | ZIP format more stable |
Prism Launcher offers full native support for Modrinth's .mrpack format.
Prism Launcher will automatically download all required mods based on the index file.
MultiMC version 5.0 and above supports .mrpack files directly.
Ensure you're using MultiMC 5.0 or newer for proper .mrpack support.
The official Minecraft launcher doesn't support .mrpack files. You'll need to convert the file and manually install the mods.
This process is more complex and error-prone. Consider using a specialized launcher for easier modpack installation.
HMCL (Hello Minecraft! Launcher) fully supports .mrpack files through its modpack installation feature.
HMCL is particularly popular in China and Asia and offers excellent .mrpack support with automatic dependency download and mod resolution.
HMCL is one of the most reliable launchers for working with .mrpack files and provides a simple one-click installation process.
PCL2 (Plain Craft Launcher 2) has limited support for .mrpack. Converting to ZIP format is recommended for better compatibility.
While PCL2 might recognize some .mrpack files directly, conversion to .zip format typically results in more reliable installations.
For other launchers not specifically mentioned above:
When in doubt, converting to ZIP format provides the most universal compatibility across all launchers.
The Modrinth modpack format (.mrpack) is a specialized ZIP file format designed for distributing Minecraft modpacks in an efficient and standardized way.
modrinth.index.json fileoverrides folder for config files
The modrinth.index.json file includes metadata such as the format version, game type, mod list with download URLs, file paths, dependency information, and file hashes for verification. This structured approach allows compatible launchers to automatically download and install all required mods.
{
"formatVersion": 1,
"game": "minecraft",
"versionId": "1.0.0",
"name": "Example Modpack",
"summary": "A sample modpack demonstrating the format",
"files": [
{
"path": "mods/examplemod.jar",
"hashes": {
"sha1": "93d6c1f9a0c18c8d1b6ae114f26fd1b2766e9ff4",
"sha512": "4cd3a3e74a0b68e5b5e3fa4c8bdd8a3c8531e771..."
},
"downloads": [
"https://cdn.modrinth.com/data/AAAAAAA/versions/1.0.0/examplemod.jar"
],
"fileSize": 1234567
}
// Additional files...
],
"dependencies": {
"minecraft": "1.19.2",
"fabric-loader": "0.14.9"
}
}
This simplified example shows the core structure of the modrinth.index.json file found in every MRPACK.
The MRPACK format was developed by Modrinth as an open, efficient alternative to existing modpack formats. Key developments:
| Feature | MRPACK | CurseForge | ZIP/MultiMC |
|---|---|---|---|
| File Size | Small (references only) | Medium (manifest) | Large (contains all mods) |
| Integrity Verification | SHA1 & SHA512 hashes | Project IDs only | None built-in |
| Launcher Support | Most modern launchers | CurseForge & some others | Universal support |
| Client/Server Distinction | Built-in support | Limited support | Manual separation |
| Open Standard | Yes (fully documented) | Partially | No standard |