Universal File Downloader Action

A powerful GitHub Actions workflow that downloads any file from the web directly into your repository. It automatically organizes, compresses, and splits large files, generates detailed readme files, and supports password-protected archives—all with zero local setup.

Base project: This workflow is heavily inspired by and builds upon the ideas from UDL-3. Many thanks to the original authors for their pioneering work!

✨ Key Features

General & Core Capabilities

• 🌐 Universal Downloading: Download any file from any direct URL. Supports single and batch downloads (multiple URLs separated by space).
• 🔄 Robust Download Engine: Combines aria2 (for high-speed, multi-connection transfers) and curl (as a fallback) with intelligent retry logic to handle unstable connections.
• 📦 Archive or Plain Storage: Choose between normal mode (files saved as‑is) or zip mode (compressed into a single 7z archive).
• 🔐 Optional Encryption: Protect your archives with a password. The password is embedded in the generated README so you never lose it.
• 📏 Configurable Splitting: Split large archives into smaller parts (10–90 MB) to bypass upload size limits or make sharing easier.
• ⚙️ Adaptive Compression: Choose a preset (auto, best, great, good, fast, fastest); the auto mode intelligently picks the highest compression level that can finish within the action’s time limit.
• 📂 Incremental Git Push: Files are committed and pushed in small batches to avoid timeout errors, even with repositories weighing tens of gigabytes.

Special & Unique Features

• 🕒 Timestamped Organization: Every run creates a uniquely named folder like download_20260514_140437 or archive_20260514_140437. No more overwritten files.
• 📋 Auto‑Generated READMEs: Each download folder/archive automatically gets a comprehensive README.md that includes:
  • List of all files with their sizes
  • Job execution start time
  • Compression level and number of parts (if archived)
  • Contents of the 7z archive (so you know exactly what’s inside without downloading)
• 🏗️ Stair‑Format Tree Listing: The main downloads/README.md shows a tree view of each folder’s contents (first 5 items) along with size, part count, and timestamp—perfect for quick browsing.
• 📎 One‑Click Copy All Links: Every README includes a “Download Manager” block containing all part links, ready to be copied and pasted into tools like JDownloader.
• 🏋️ Heavy File Handling: Tested with files up to 28 GB, and capable of handling downloads above 50 GB thanks to smart batching and resume‑friendly transport.
• 🧠 Smart Archive Naming: In zip mode, if only one file is downloaded, the archive takes its name (shortened if it’s too long) instead of a generic name—keeping things human‑readable.

📁 Project Structure

.
├── .github
│   └── workflows
│       └── download.yml          # Main workflow definition
├── downloads                     # (Created after first run) All downloaded content
├── README.md                     # This file
└── LICENSE                       # GNU GPL v3.0

The entire logic resides in a single workflow file. No external build steps or dependencies—just fork, configure, and run.

⚙️ How to Use

1. Fork the repository to your own GitHub account.
2. Go to the Actions tab in your fork.
3. Select the ⬇️ 01- Download URL workflow on the left.
4. Click “Run workflow” and fill in the inputs:
   • URLs: The download link(s), separated by spaces.
   • Mode: normal (store files as‑is) or zip (compress into a 7z archive).
   • Part size: Split archive part size in MB (10–90, default 45).
   • Password: (Optional) Password to encrypt the archive.
   • Compression Preset: Choose a compression level (auto recommended).
5. Click “Run workflow” and wait for the action to complete.
6. After completion, your files will appear in the downloads/ folder, organised by timestamp and accompanied by a detailed README.md.

🔧 How to Modify

The entire behaviour is controlled by the YAML file located at .github/workflows/download.yml. You can edit it directly in your fork to change:

• Default split size or compression level.
• Maximum download time (timeout-minutes).
• Git push batching parameters.
• The naming conventions for folders and archives.
• The contents of the auto‑generated README files.

Just open the file in GitHub’s editor, make your changes, and commit. The next run will use your custom settings.

🛠️ Technologies & Libraries Used

Library / Tool	Description
GitHub Actions	Hosts and orchestrates the entire workflow.
aria2	Lightweight multi‑connection download utility.
p7zip‑full	Command‑line version of 7‑Zip, providing LZMA2 compression and splitting.
curl	Transfers data from URLs, used as a fallback downloader.
bc	Arbitrary precision calculator for estimating compression times.
Python 3	Used for URL‑encoding helper functions.

🙏 Credits

This project started from the excellent work of the UDL-3 repository. The foundation, inspiration, and many core ideas came from there. Huge thanks to the original authors!

📜 License

This project is open-source and licensed under the GNU General Public License v3.0 (GPL-3.0).

Summary of Key Requirements

The GPL-3.0 is a strong copyleft license that ensures the software remains free. If you use, modify, or distribute this code, you must adhere to the following:

• Disclose Source: You must make the source code available when you distribute the software.
• License & Copyright Notice: You must include a copy of the license and the original author's copyright notice.
• Same License (Copyleft): Any modifications or derived works must also be licensed under GPL-3.0.
• State Changes: You must clearly indicate if you have modified the original files.
• No Warranty: This software is provided "as is" without any warranty of any kind.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

For full details, please refer to the LICENSE file in this repository.

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© About the Developer

I'm a passionate professional specializing in Graphic Design, Web Development, and cross-platform app development with Dart & Flutter. I thrive on turning innovative ideas into reality, whether it's a stunning visual, a responsive website, or a polished desktop app like this one. I also develop immersive games using Unreal Engine.

• Website: rovoid.ir
• GitHub: IMROVOID
• LinkedIn: Roham Andarzgou

🙏 Support This Project

If you find this application useful, please consider a donation. As I am based in Iran, cryptocurrency is the only way I can receive support. Thank you!

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