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Privacy Policy

AVL Download Master Browser Extension · Last updated: November 12, 2026
Summary: AVL Download Master does not collect, store, sell, or transmit any user data, browsing history, or analytics to external or developer-operated servers.

1. Data Handled Strictly Locally on Your Device

To perform its core downloading functionality, the browser extension accesses and transfers the following data strictly locally from your browser to the AVLDownloadMaster desktop application installed on your own Windows computer via the browser's Native Messaging API (host identifier: com.pitvn.avldm):

  • Website Content: Downloadable file links, image/media URLs, and playable stream URLs (HLS .m3u8, DASH .mpd, MP4, audio) detected on the active tab when you initiate or capture a download.
  • Authentication Information (Site Cookies): Matching cookies for the specific download or media URL are read via the cookies API and passed locally to the desktop app solely so files behind an active user login can be downloaded.
  • Active Tab Context: The active tab's URL (referrer), page title, and browser User-Agent associated with a requested download.

2. Local Browser Storage

  • User Preferences (storage.local): Settings such as automatic download capture toggle, minimum file size filter (MB), and interface language preference (Auto, English, Vietnamese) are stored locally in your browser.
  • Session Media List (storage.session): Media stream URLs detected on an open tab are kept temporarily in session memory for that tab only and are automatically cleared when the tab navigates or closes.

3. Permissions Explained

  • downloads: Intercepts browser downloads (only when capture is enabled) to transfer them to the multi-connection desktop app.
  • nativeMessaging: Communicates locally with the AVLDownloadMaster Windows application.
  • webRequest & <all_urls>: Inspects media response headers in memory to list playable streams on the active tab and enables the hover download button on web video players.
  • contextMenus, scripting, activeTab, tabs: Powers right-click download menus and the user-initiated "Download all on this page" feature.

4. Third-Party Sharing & Remote Servers

AVL Download Master does not operate tracking servers, does not use third-party analytics or advertising SDKs, and never sells, rents, or transfers user data to any third party.

5. Contact

If you have any questions about this Privacy Policy or how data is handled locally, please contact the developer: