When a website is down (DNS resolution failure), users get a dead-end error page. This extension detects that situation and redirects to downredirect.com which provides active alternative sites.

1. User navigates to any http/https URL. 2. Extension monitors for onErrorOccurred events with RESOLVE errors in the main frame. 3. When a DNS resolution failure is detected (site is down), extension redirects the tab to https://downredirect.com/s/?nx=<failed_hostname>. 4. The downredirect.com service presumably shows alternative working sites for that hostname.

Target users: General web users who encounter frequently-down websites / Users seeking alternatives when a site is unreachable

Cannot inspect downredirect.com/s/ landing page content from extension source alone — unclear what alternatives are shown or if ads/monetization occurs on that page
Very small codebase (15 lines JS) limits depth of analysis
No UI files (popup, options) to inspect — extension is purely background-driven

Monetization

No paid features detected

No payment, subscription, premium, billing, or upgrade references anywhere in the source code. The extension is extremely minimal (4 files, 15 lines of JS). No feature gating or tiered functionality is implemented.

Confidence: 90
Payment platform: --
Source: AI / Medium
Login required: No
Reason: The extension has no login UI, no authentication calls, no account creation, and no credentials storage. The core workflow (detecting DNS resolution errors and redirecting to downredirect.com) works entirely without any user account or login.

Permission risk

High-risk permissions

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

主机权限覆盖范围较宽

Publisher

uploadextsubmissions

Independent publisher

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Phone: --
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Permissions

Host access