sleek-ytdner 1.0

A sleek, theme-aware Youtube Downloader using Flask and yt-dlp

Sleek YTDner

Pure. Potent. Permanent.
The last media archiver designed for the uncompromising perfectionist.

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📖 Introduction

Sleek YTDner is a modern, minimalist YouTube downloader and media archiver. Built with Flask and powered by the robust yt-dlp engine, it wraps powerful functionality in a stunning, high-performance Glassmorphism UI.

Sleek is designed for those who value aesthetics, privacy, and control.

✨ Key Features

• 💎 Glassmorphism Design: A beautiful, translucent user interface that blends with your system theme.
• 🌗 Adaptive Theming: Automatically syncs with your system's Light/Dark mode, with a manual toggle.
• 🚀 8K Ready: Supports extracting the highest possible quality video (up to 8K HDR) and lossless audio.
• 🔒 Privacy First: All processing happens locally. No external servers, no tracking, complete data sovereignty.
• 📂 Smart Automation: Remembers your preferred download paths and optimizes file formats automatically.
• ⚡ Async Processing: Non-blocking download streams for a responsive experience.

🛠️ Technology Stack

• Backend: Python 3.12+, Flask
• Core Engine: yt-dlp
• Frontend: HTML5, Vanilla JS, CSS3 (Variables, Flexbox/Grid, Backdrop Filter)
• License: MIT

🚀 Getting Started

Prerequisites

• Python 3.8+: Ensure you have a compatible version installed.
• FFmpeg: Required for merging high-quality video and audio streams.
  • Ubuntu/Debian: sudo apt install ffmpeg
  • macOS: brew install ffmpeg
  • Windows: Download from FFmpeg.org and add to PATH.

Installation

Sleek YTDner is distributed as a standard Python package. You can install it directly from the source.

1. Clone the repository

   git clone https://github.com/hslcrb/pypack_sleek_a-ytdownloader-pkg.git
   cd pypack_sleek_a-ytdownloader-pkg
   

2. Install with pip We recommend installing in a virtual environment to keep your system clean.

   # Create and activate virtual environment (Optional but Recommended)
   python -m venv venv
   source venv/bin/activate  # Windows: venv\Scripts\activate
   
   # Install the package
   pip install .
   

   For developers wishing to modify the code:

   pip install -e .
   

💻 Usage

Once installed, Sleek YTDner is available as a global command in your environment.

1. Launch the Server Navigate to the directory where you want to store configuration and downloads (or rely on default settings), then run:

   sleek-downloader
   

2. Access the Interface Open your web browser and navigate to:

   http://localhost:5000
   

   The application will automatically create a config.json and a downloads folder in your current working directory if not configured otherwise.

🤝 Contributing

Contributions are welcome! Please read our CONTRIBUTING.md for details on our code of conduct and the process for submitting pull requests.

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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© 2008-2026 Rheehose (Rhee Creative). Crafted with passion.
Last Updated: 2026-01-17 (KST)