User navigates to a Bilibili video page → content script injects interceptor.js to capture video player data → popup queries content script for video info → user clicks 'Download' button → extension fetches video chunks from Bilibili API using user's session cookie → video is assembled and saved as .mp4 via Chrome downloads API

Target users: Bilibili users who want to download and save videos for offline viewing

All JS files are minified/obfuscated webpack bundles, making deep code analysis difficult
Cannot fully verify whether bangumi content downloads work without Bilibili premium membership
The extension sends analytics events to Google Analytics (G-K9VHYQ9F5N) which is not a paid feature concern but a privacy note

Monetization

No paid features detected

No evidence of paid features, subscription flows, payment platforms, or feature gating in the extension source code. The 'pro' keyword hits in static analysis are artifacts from minified webpack bundle boilerplate (likely substrings of 'process', 'prompt', etc.), not references to paid tiers. The extension downloads videos directly using Bilibili's API without any paywall or upgrade UI. The destination service (Bilibili) has its own premium membership, but this extension does not gate any functionality behind it.

Confidence: 85
Payment platform: --
Source: AI / Medium
Login required: Yes
Reason: The extension reads the user's Bilibili SESSDATA cookie via chrome.cookies.get() and uses it to authenticate API requests to api.bilibili.com to retrieve video download URLs. The content script checks 'allowDownload' from the API response; without a valid Bilibili login session, the extension cannot obtain video download URLs and returns null (no-content state in popup). The cookies permission in the manifest is specifically for reading this Bilibili session cookie.

Permission risk

High-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：downloads、scripting、storage、cookies
主机权限覆盖范围较宽

Publisher

智能bilibili下载助手工具

Independent publisher

Email: [email protected]
Phone: --
Address: --

Public contact fields are shown above. Developer portfolio pages are available on paid accounts.

View developer portfolio

Permissions

Host access