Users cannot natively bulk-download their TikTok liked/favorited content. This extension preserves personal TikTok video collections locally before videos are deleted or accounts are lost.

1. User installs extension and visits tiktok.com. 2. Content script (c.js) injects a sidebar iframe (rl.html/r.js) on TikTok homepage. 3. Sidebar loads UI from myfavett-ui.vercel.app. 4. User selects a local folder via File System Access API. 5. Extension intercepts TikTok API responses (b.js webRequest listener captures /api/post/item_list/ headers). 6. Video metadata and URLs are collected, then videos and cover images are downloaded to organized local folders (data/Likes/, data/Favorites/, data/Following/). 7. Progress is tracked in IndexedDB and synced to local JS files via File System Access API.

Target users: TikTok users who want to back up their liked and favorited videos / Content archivists preserving TikTok collections / Users concerned about losing access to TikTok content

The main logic file s.js is heavily minified (77KB single line), making precise line-level attribution difficult for some findings.
Cannot fully verify if the myfavett-ui.vercel.app hosted UI has any paywall or login prompts since it is external and not bundled in the extension package.
The extension interacts with TikTok's private API endpoints which may change over time, potentially affecting functionality.

Monetization

No paid features detected

No payment infrastructure found in the source code. Searched for: stripe, subscription, payment, purchase, license, premium, plan, free, quota, limit — none found as meaningful paid-feature references. The 'upgrade' and 'pro' keyword hits in s.js are substrings within minified utility code (e.g., lodash debounce/throttle), not billing or feature-gating logic. No Chrome Web Store payments API usage detected. The extension appears fully free.

Confidence: 90
Payment platform: --
Source: AI / High
Login required: Yes
Reason: The extension accesses TikTok user-specific content (Liked videos, Favorited videos, Follows) by intercepting TikTok API calls (host_permissions: https://*.tiktok.com/api/post/item_list/). These endpoints require an authenticated TikTok session. The extension itself has no login UI—it relies on the user being logged into TikTok in their browser.

Permission risk

Medium-risk permissions

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

扩展能力较强：webRequest
同时具备浏览数据与站点访问能力

Publisher

Zeeingsoft

Independent publisher

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

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Permissions

Host access