
CORS Unlocker by Saiya
Enable cross-origin requests without proxy servers. Eliminate infrastructure costs for developers calling third-party APIs. One-click CORS activation with smart rule management.
You'll need Firefox to use this extension
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About this extension
Eliminate Proxy Server Costs - Enable CORS Directly in Firefox
Stop paying for expensive proxy servers just to bypass CORS restrictions. CORS Unlocker enables cross-origin requests directly in your Firefox browser, saving developers hundreds of dollars annually.
🎯 Why Choose CORS Unlocker:
- Save $240-2400+ annually on server costs
- One-click CORS activation for any domain
- Intelligent rule management and auto-cleanup
- Zero configuration required
- Open source transparency
👨💻 Ideal Use Cases:
- Company internal tools and admin panels
- API testing and rapid prototyping
- Educational coding projects
- Personal web applications
- Startup minimum viable products
🔧 Developer Features:
- NPM package for seamless integration
- Automatic extension detection
- User-friendly installation prompts
- Local rule storage and management
- Smart cleanup of unused rules
📋 How to Use:
1. Install CORS Unlocker extension
2. Navigate to your web application
3. Click the extension icon
4. Enable CORS for current domain
5. Make cross-origin API calls directly
🔒 Privacy First:
- All processing happens locally
- No external data transmission
- Rules stored on your device only
- Full source code available on GitHub
Compatible with desktop Firefox only. Mobile browsers not supported due to extension API limitations.
Transform your development workflow and eliminate unnecessary infrastructure costs today!
Stop paying for expensive proxy servers just to bypass CORS restrictions. CORS Unlocker enables cross-origin requests directly in your Firefox browser, saving developers hundreds of dollars annually.
🎯 Why Choose CORS Unlocker:
- Save $240-2400+ annually on server costs
- One-click CORS activation for any domain
- Intelligent rule management and auto-cleanup
- Zero configuration required
- Open source transparency
👨💻 Ideal Use Cases:
- Company internal tools and admin panels
- API testing and rapid prototyping
- Educational coding projects
- Personal web applications
- Startup minimum viable products
🔧 Developer Features:
- NPM package for seamless integration
- Automatic extension detection
- User-friendly installation prompts
- Local rule storage and management
- Smart cleanup of unused rules
📋 How to Use:
1. Install CORS Unlocker extension
2. Navigate to your web application
3. Click the extension icon
4. Enable CORS for current domain
5. Make cross-origin API calls directly
🔒 Privacy First:
- All processing happens locally
- No external data transmission
- Rules stored on your device only
- Full source code available on GitHub
Compatible with desktop Firefox only. Mobile browsers not supported due to extension API limitations.
Transform your development workflow and eliminate unnecessary infrastructure costs today!
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Permissions and dataLearn more
Required permissions:
- Block content on any page
- Access browser tabs
- Access your data for sites in the forth.ink domain
Optional permissions:
- Access your data for all web sites
More information
- Add-on Links
- Version
- 1.1.0
- Size
- 111.49 kB
- Last updated
- 9 days ago (27 Jun 2025)
- Related Categories
- Licence
- MIT Licence
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
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Release notes for 1.1.0
v1.1.0 - Enhanced CORS Control
🆕 New Features
✨ Improvements
🐛 Bug Fixes
🆕 New Features
- Custom Headers: Add your own custom headers when using authenticated requests
✨ Improvements
- Easier Setup: Click "Custom headers" in popup to quickly configure advanced settings
- Better Control: More precise header management for complex API integrations
- Smoother Experience: Improved navigation between popup and settings
🐛 Bug Fixes
- Fixed issues with popup interactions
- Improved reliability of rule storage and synchronization
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