Overview
Download Queue
Track progress, speed and time remaining for every download in a clean dark interface.
Python 3.12
PySide6 / QML
aria2
STZ Downloader
An IDM-style download manager for Windows with a Qt/QML interface and the aria2 engine. The browser extension catches downloads and sends them straight to the app, with cookies and headers for authenticated links.
Settings
Full Control
Default folder, connections per file, speed limit, language and start with Windows in a single panel.
Capture
Quick Confirmation
When a download is caught, the app shows its name, size and destination so you can confirm or adjust before it starts.
Extension
Browser Integration
The extension popup shows whether the app is connected and turns automatic capture on or off with one click.
Key Features
Multiple Connections
Splits each file into parts downloaded in parallel by aria2, using all available bandwidth.
Browser Extension
Chrome and Firefox extension that intercepts downloads and adds "Download with STZ Downloader" to the context menu.
Authenticated Downloads
Forwards session cookies and headers, so links from cloud drives, forums and private portals download without login errors.
Speed Limits
A global cap saved in settings plus a per-download limit, adjustable at any time.
Tray and Startup
Lives in the system tray, starts with Windows and keeps a single instance running.
100% Local
No telemetry: the extension only talks to the app on your PC via Native Messaging and authenticated loopback.
Technical Specs
Current Version
v0.1.10
Platform
Windows 10/11
Language
Python 3.12
Engine
aria2
Browsers
Chrome · Firefox
License
MIT License