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%
Version
1.0
Manifest V3

History

3 snapshots

Tracking since Apr 21, 2026.

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DateUsersRatingReviewsVersion
Apr 21, 20261.0
May 6, 20261.0
May 18, 20261.0
Now21.0

Permissions & access

Permissions
storagetabsactiveTabwebNavigation
Host access
<all_urls>

Screenshots

URL Warning Extension screenshot 1

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
Support URL
Privacy Policy

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Data sourced from the Chrome Web Store · last verified May 31, 2026.