STZ Downloader integration by STZ Labs
Intercepts browser downloads and seIntercepts browser downloads and forwards them to the STZ Downloader desktop application powered by aria2.nds them to STZ Downloader.
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About this extension
STZ Downloader Integration seamlessly connects your browser to the STZ Downloader desktop application, bringing multi-connection, high-speed downloads powered by aria2 directly to your browsing workflow.
Key Features:
- Automatic Download Interception: Catches file downloads as they start and hands them off to the desktop app.
- Context Menu Integration: Right-click any link, image, or media item and select "Download with STZ Downloader".
- Authenticated Download Support: Forwards session cookies and request headers so private downloads (cloud drives, forums, portals) download without authentication failure.
- Native Messaging Bridge: Ultra-fast local communication between the browser and your desktop application.
- Easy Control: Toggle interception on or off anytime directly from the toolbar popup.
How to Use:
1. Make sure the STZ Downloader desktop application is installed and running on your PC.
2. Click the extension icon in your browser toolbar to verify the status shows "connected".
3. Download any file normally or right-click a link and choose "Download with STZ Downloader".
4. The file will automatically open in STZ Downloader with accelerated multi-connection downloading.
Privacy & Security:
This extension operates 100% locally. It contains no tracking, no analytics, and communicates only with your local machine (127.0.0.1 and native messaging host). No browsing history, personal data, or files are ever sent to remote third-party servers.
Support & Source Code:
Source code and issues: https://github.com/starzynhobr/stz-downloader
Support: https://stzlabs.com
Key Features:
- Automatic Download Interception: Catches file downloads as they start and hands them off to the desktop app.
- Context Menu Integration: Right-click any link, image, or media item and select "Download with STZ Downloader".
- Authenticated Download Support: Forwards session cookies and request headers so private downloads (cloud drives, forums, portals) download without authentication failure.
- Native Messaging Bridge: Ultra-fast local communication between the browser and your desktop application.
- Easy Control: Toggle interception on or off anytime directly from the toolbar popup.
How to Use:
1. Make sure the STZ Downloader desktop application is installed and running on your PC.
2. Click the extension icon in your browser toolbar to verify the status shows "connected".
3. Download any file normally or right-click a link and choose "Download with STZ Downloader".
4. The file will automatically open in STZ Downloader with accelerated multi-connection downloading.
Privacy & Security:
This extension operates 100% locally. It contains no tracking, no analytics, and communicates only with your local machine (127.0.0.1 and native messaging host). No browsing history, personal data, or files are ever sent to remote third-party servers.
Support & Source Code:
Source code and issues: https://github.com/starzynhobr/stz-downloader
Support: https://stzlabs.com
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Permissions and data
Required permissions:
- Exchange messages with programs other than Firefox
- Download files and read and modify the browser’s download history
Optional permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 0.1.10
- Size
- 15.27 KB
- Last updated
- 4 days ago (Sep 28, 2026)
- Related Categories
- License
- MIT License
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Tags
- Add to collection