BiliFlow is built with a privacy-first architecture. All video downloading, stream extraction, and media saving occur 100% locally in your browser. We do not collect, store, track, transmit, or sell any personal information or browsing history.
| Permission | Technical Purpose |
|---|---|
downloads |
To save downloaded MP4/MP3 files directly to your device. |
declarativeNetRequest |
To add Referer headers so Bilibili CDN servers allow direct downloads without 403 Forbidden errors. |
storage |
To save user interface preferences locally on your machine. |
activeTab / scripting |
To read active video metadata (title, duration, thumbnail) for the popup and inject the download button. |
Host Permissions |
To communicate directly with Bilibili video endpoints for stream fetching. |
We do not share any data with third parties, advertisers, or tracking services. No remote analytics or trackers are included in the extension package.
This Privacy Policy is effective as of September 2026. Any updates will be published on this page.