Allows developers and designers to view and test how a website looks on both desktop and mobile devices simultaneously without switching contexts or using separate devices.

User clicks extension icon -> Clicks 'Start Split Preview' -> Extension opens a new tab with a viewer page containing two iframes (desktop and mobile) -> Content script injects into original page to capture cookies/headers -> Background script manages URL changes and scroll sync -> User can adjust split ratio and scroll synchronously.

Target users: Web developers / UI/UX designers / QA testers

The extension uses an internal proxy server (ssc.anker-in.com) which may have availability or privacy implications not visible in the source.
The extension logs user activity to an internal server, which is a privacy consideration but not a functional limitation for the analysis.
The 'TurboCheckout' keyword match was a false positive from error handling.

Monetization

No paid features detected

The extension is free to use. The heuristic detected keywords like 'upgrade' and 'checkout', but these are false positives. 'Upgrade-Insecure-Requests' is a standard HTTP header (background.js:214, content.js:685). 'TurboCheckout' is caught in a generic error handler (content.js:13) to suppress third-party script errors, not to implement checkout. 'Pro' appears in 'iPhone 14 Pro' device name (content.js:252) and 'PROXY_SERVER_URL' config (config.js:10). There is no billing logic, subscription gating, or payment UI in the extension.

Confidence: 90
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension does not implement any login UI or authentication flow. It operates directly on the current browser tab. While it calls an internal Feishu API (background.js:140) to fetch a username for logging activity, this appears to be for internal telemetry/audit by the developer (Anker) rather than a user-facing login requirement for the extension's core functionality. The user can use the preview feature without logging into any account.

Permission risk

High-risk permissions

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

敏感权限：debugger
扩展能力较强：activeTab、storage、scripting、tabs
主机权限覆盖范围较宽

Publisher

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