URL Warning Extension
Checks visited sites against a blacklist and warns users
As of May 2026, URL Warning Extension has 2 users in the Productivity category.
Usersno change0%
2
2
Ratingno change0%
—
— reviews
Reviewsno change0%
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Version
1.0
Manifest V3
History
3 snapshotsTracking since Apr 21, 2026.
Not enough history yet for this metric — the chart fills in as we collect more snapshots.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 21, 2026 | — | — | — | 1.0 |
| May 6, 2026 | — | — | — | 1.0 |
| May 18, 2026 | — | — | — | 1.0 |
| Now | 2 | — | — | 1.0 |
Permissions & access
- Permissions
- storagetabsactiveTabwebNavigation
- Host access
- <all_urls>
Screenshots
About
A powerful Chrome extension designed to protect users from potentially harmful websites by using customizable blacklists and whitelists. ## 🛡️ Features ### Core Protection - **Real-time Website Scanning**: Instantly checks websites against your custom blacklist and whitelist - **Path-based URL Matching** (NEW!): Target specific paths within domains (e.g., block `example.com/malware` but allow `example.com/safe`) - **Auto-refreshing Lists**: Keep your protection up-to-date with scheduled refreshes - **Smart Notification System**: Get informed about blocked sites and protection status ### Advanced Customization - **Custom Blacklist & Whitelist Management**: - Import from local JSON files - Fetch from remote URLs - Clear lists with a single click - **Multiple Data Sources**: - Built-in default lists from `nerd.bh/apis/warnme/` - Support for custom remote endpoints - Local file imports ### User Experience - **Tab-based Settings Interface**: Easily navigate between Blacklist, Whitelist, Settings, and About - **Sleek Notification Toasts**: Non-intrusive alerts with auto-dismissal - **Mobile-friendly Design**: Responsive layout works on all devices - **Terminal-styled About Page**: Unique developer information with animations ## 🔧 Usage ### Basic Usage - The extension icon will change color based on the current site's status: - 🟢 Green: Safe site - 🔴 Red: Blacklisted site - 🔵 Blue: Whitelisted site - ⚪ Gray: Default/Not checked - Click the extension icon to see site status and available actions ### Customizing Protection #### Managing Blacklist 1. Open extension options by right-clicking the icon and selecting "Options" 2. Go to the "Blacklist" tab 3. Choose your blacklist source: - Upload a local JSON file - Fetch from a remote URL - Use the built-in default list 4. Clear the entire blacklist with the "Clear Blacklist" button when needed #### Managing Whitelist 1. Navigate to the "Whitelist" tab 2. Add trusted sites that should bypass the protection 3. Import/export whitelist data as needed 4. Clear the entire whitelist with the "Clear Whitelist" button when needed #### Advanced URL Patterns - Block specific paths: `example.com/malware` - Block subdomains: `ads.example.com` - Block specific sections: `forum.example.com/spam` - Block with wildcards: `*.example.com` ## ⚙️ Configuration Options - **Auto-refresh Lists**: Choose refresh frequency (hourly, daily, weekly) - **Notifications**: Toggle popup notifications and toast alerts - **Refresh on Block**: Automatically refresh lists when a blocked site is encountered - **Reset to Default**: Reset all settings to default values
Technical
- Version
- 1.0
- Manifest
- V3
- Size
- 1.22MiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- hkiafplningehojlcdlplfahbachgbjg
- Developer ID
- ube93d04a175c0edebac33eb8f13ddac0
- Developer Email
- [email protected]
- Created
- Jun 13, 2025
- Last Updated (Store)
- Jun 13, 2025
- Last Scraped
- May 31, 2026
- Website
- https://nerd.bh/
- Support URL
- —
- Privacy Policy
- —
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Data sourced from the Chrome Web Store · last verified May 31, 2026.