A powerful web-based tool to update your Minecraft mods, discover new ones, and build modpacks with ease, all using the official Modrinth API.

This tool was built to solve two common problems for Minecraft players: the tedious process of manually updating dozens of mods, and the challenge of building a new mod list with all the correct dependencies.

MC Mod Updater provides a simple, elegant solution by allowing you to either drag-and-drop your existing .jar files, your current .mrpack, or search for new mods directly. It then uses a powerful, hash-based search to accurately identify your mods on Modrinth and find the latest compatible versions for your chosen Minecraft version and mod loader.

• 🔍 Accurate Mod Identification: Uses a hash-first search for 100% accuracy, with smart ID/Name search as fallback
• 🔗 Automatic Dependency Resolution: Automatically finds and includes required dependencies (APIs, libraries, etc.)
• 🔎 Mod Discovery: Built-in search to find and add new mods directly from Modrinth's database
• 📦 Modpack Export: Download as standard .mrpack files for easy import into launchers

• 🧵 Fabric - Full support with latest versions
• ⚒️ Forge - Complete compatibility
• 🔥 NeoForge - Modern Forge alternative support
• 🪡 Quilt - Fabric fork compatibility
• 🎮 All Minecraft Versions - From legacy to latest releases

• ⚡ Smart Caching - Session-based caching reduces API calls and improves speed
• 📊 Batch Processing - Efficient handling of large mod collections
• 🚦 Rate Limit Handling - Transparent API rate limit management with countdown
• 📱 Mobile Responsive - Works perfectly on phones and tablets
• 🎨 Modern UI - Clean, dark theme with intuitive controls

• 🖼️ Mod Icons & Details - Visual mod information with descriptions
• 👤 Author Information - Direct links to mod creators
• 📈 Download Statistics - See mod popularity metrics
• 📝 Changelogs - View what's new in mod updates
• 🏷️ Categories & Tags - Understand mod types at a glance

1. 🎛️ Select Your Target: Choose your mod loader (Fabric, Forge, NeoForge, Quilt) and Minecraft version
2. 📁 Add Your Mods:
   • To Update: Drag and drop existing .jar files or your .mrpack into the upload area
   • To Discover: Use the search bar to find new mods from Modrinth
3. ⚙️ Process Your List: Click the "Update" button and watch the magic happen
4. 📥 Review & Download: Get latest compatible versions plus dependencies that you can download individually, as a .zip, or as a complete .mrpack

Built with performance and accessibility in mind, using modern web standards without heavy frameworks.

• Vanilla HTML, CSS, and JavaScript - No framework bloat, maximum performance
• Responsive Design - Mobile-first approach with desktop enhancements
• Progressive Enhancement - Works with JavaScript disabled (basic functionality)

• JSZip - Client-side .jar file reading and .mrpack creation
• TOML.js - Parse mods.toml files for mod identification
• Marked.js - Render mod changelogs from Markdown
• CryptoJS - Calculate SHA-1 file hashes for accurate identification
• Modrinth API - All mod data, versions, and metadata

• Netlify - Hosting with automatic deployments
• Rybbit Analytics - Privacy-focused, cookie-free analytics
• Custom Domain - Professional presence at mcmodupdate.app

• Session Caching - Reduces API calls by 60-80% on repeat operations
• Batch Processing - Handle 100+ mods efficiently
• Smart Rate Limiting - Automatic backoff with user-friendly countdown
• Optimized Assets - Fast loading with proper caching headers
• Mobile Optimized - Lightweight and fast on mobile devices

Contributions make the open-source community amazing! Any contributions are greatly appreciated.

• 🐛 Bug Reports - Found an issue? Open an issue with details
• 💡 Feature Requests - Have an idea? Tag it with "enhancement"
• 🔧 Code Contributions - Fork, branch, code, and PR!
• 📖 Documentation - Help improve guides and explanations
• 🌐 Translations - Help make it accessible worldwide

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

Distributed under the Mozilla Public License 2.0. See LICENSE for more information.

This license ensures that:

• ✅ You can use this tool freely for any purpose
• ✅ You can modify and distribute the code
• ✅ Any improvements to the original files must be shared back
• ✅ Commercial use is allowed

• Modrinth Team - For providing an amazing, free API that makes tools like this possible
• Minecraft Modding Community - For creating the incredible mods that make Minecraft endlessly enjoyable
• Open Source Contributors - Everyone who helps improve this tool

Made with ❤️ for the Minecraft community