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[Opera / Chrome] - Anti CORS 1.3

[Opera / Chrome] - Anti CORS 1.3 Latest
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@NGxDTV NGxDTV released this 03 Jun 08:21
v1.3
8b116cb

NG-Anti-CORS 1.3 🛡️

The Ultimate CORS Enabler for Developers 🚀

Version
Chrome
Edge
Opera

NG-Anti-CORS is a powerful browser extension that enables Cross-Origin Resource Sharing with a single click – perfect for testing APIs and debugging web apps in local environments. 🔧

Features ✨

  • Easy to Use 🖱️  – One-click activation for any domain
  • Domain-specific Control 🌐  – Enable CORS per-site
  • Advanced Fetch & XHR Support 🔄 – Deep integration with browser request APIs
  • Preflight Control 🛂 – Optional handling of CORS preflight (OPTIONS) requests
  • All HTTP Methods 📡 – Basic mode supports GET, POST, HEAD and PUT; Advanced mode unlocks PATCH, DELETE, OPTIONS and the rest
  • Visual Indicators 💡 – Color-coded icons show current status
  • Save Settings 💾 – Keep your preferences after browser restarts
  • Customizable Notifications 🔔 – Decide how and when toast notifications appear
  • Supports Requests with Credentials* 🔑 – Cookies / auth headers pass through if the target server sends Access-Control-Allow-Credentials: true
  • Lightweight 🪶 – Pure Declarative Net Request, zero remote calls, minimal overhead

* Browsers require the target API to set Access-Control-Allow-Credentials: true; NG-Anti-CORS never injects that header automatically.

Installation 📥

1. Chrome Web Store (recommended)

  1. Open the Chrome / Edge / Opera listing
  2. Click Add to Chrome and confirm

2. Manual Installation

  1. Download the latest release .zip
  2. Unzip to any folder
  3. Open chrome://extensions/ (or edge://extensions/)
  4. Enable Developer mode (top right)
  5. Click Load unpacked and select the unzipped folder

Opera users: Install the helper extension “Install Chrome Extensions” first, then follow the Chrome steps.

Usage 🚀

  1. Open a page that shows CORS errors
  2. Click the NG-Anti-CORS icon
  3. Toggle Enable CORS for the current domain
  4. (Optional) Toggle Preflight Request handling for advanced scenarios
  5. (Optional) Check Remember this setting to persist across restarts
  6. Reload the page – CORS restrictions are gone!

When NG-Anti-CORS is disabled for a domain, it leaves the browser’s security model untouched.

Understanding CORS Modes

Mode Enabled HTTP methods Typical use-case
Basic (default) GET, POST, PUT, HEAD Simple REST calls, most front-end dev work
Advanced (Preflight) Full method set: PATCH, DELETE, OPTIONS … APIs needing custom headers, credentials, complex verbs

Enable Preflight Request handling when:

  • You call APIs with PATCH, DELETE, OPTIONS, etc.
  • Your requests include custom headers (e.g. Authorization, X-Auth-Token)
  • You see “Method not allowed” or failed preflight in DevTools
  • You need to send cookies or HTTP-auth cross-origin and the server supports it

Adjusting Settings ⚙️

  1. Click the NG-Anti-CORS icon
  2. Open the Settings tab
  3. Change notification duration, default toggles, …
  4. Click Save

For Developers 👨‍💻

Ideal for:

  • Front-end devs consuming third-party APIs
  • Testing local micro-services (e.g. localhost:3000 ↔︎ localhost:5000)
  • Debugging CORS errors in staging / prod
  • Rapid API prototyping with tools like Postman, Swagger UI, etc.

Troubleshooting 🔧

  1. Verify the extension is active (green icon)
  2. Check that CORS is enabled for the current domain
  3. Hard-reload the page (Ctrl + F5)
  4. Inspect DevTools → Network for failing requests
  5. Confirm the target server actually blocks CORS – some errors originate elsewhere

Privacy & Security 🔒

  • No telemetry – zero personal data collected
  • No remote servers – all logic runs locally via the Chrome Declarative Net Request API; no proxying
  • Minimal storage – only remembers your per-domain toggles

Security notice: Use NG-Anti-CORS only in development or on trusted sites. Turning off CORS weakens standard browser protections.

Version History 📝

1.3

  • Fixed stray notifications on untouched domains
  • Exempted Google / YouTube CORS flow from modification
  • Smarter detection of existing CORS headers
  • Only shows notifications when relevant and respecting user settings
  • Improved handling of protected Chrome/Edge pages
  • Switched header ops from APPEND → SET to avoid duplicates
  • Unique DNR rule IDs to bypass extension conflicts
  • Performance tweaks: skip domains that don’t need CORS fixes

(Older logs: see CHANGELOG.md)

Contributing 🤝

  1. Fork → git checkout -b feature/AmazingFeature
  2. Commit → git commit -m "feat: add AmazingFeature"
  3. Push → git push origin feature/AmazingFeature
  4. Open a Pull Request – we ❤️ PRs!

License 📄

MIT – see LICENSE.

Developed with ❤️ for the web-dev community.

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[Opera / Chrome] - Anti CORS 1.2

[Opera / Chrome] - Anti CORS 1.2

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@NGxDTV NGxDTV released this 30 May 09:05
v1.2
e3ebf9f

NG-Anti-CORS 1.2 🛡️

The Ultimate CORS Enabler for Developers 🚀

Version
Chrome
Opera

NG-Anti-CORS is a powerful browser extension that allows CORS (Cross-Origin Resource Sharing) requests with just one click. The perfect developer tool for testing APIs and debugging applications in local environments! 🔧

Features ✨

  • Easy to Use 🖱️ - One-click activation for any domain
  • Domain-specific Control 🌐 - Enable CORS requests only for specific domains
  • Advanced Fetch & XHR Support 🔄 - Deep integration with browser request APIs
  • Preflight Control 🛂 - Optional handling of CORS preflight requests
  • All HTTP Methods 📡 - Support for GET, POST, PUT, PATCH, DELETE, OPTIONS, and more
  • Visual Indicators 💡 - Color-coded icons show current status
  • Save Settings 💾 - Retain your preferences even after browser restart
  • Customizable Notifications 🔔 - Configure how and when notifications appear
  • Lightweight 🪶 - Minimal impact on browser performance

Installation 📥

  1. Chrome Web Store (recommended):

    • Download the latest Chrome / Opera release
    • Once approved, you'll be able to find it by searching for "NG-Anti-CORS"
    • Click "Add" and confirm the installation

  2. Manual Installation:

    • Download the latest release
    • Unzip the file to a folder
    • Open Chrome/Opera and navigate to chrome://extensions/
    • Enable "Developer mode" (top right)
    • Click "Load unpacked" and select the extracted folder

Usage 🚀

  1. Navigate to a website with CORS issues
  2. Click on the NG-Anti-CORS icon in the toolbar
  3. Enable the toggle for the current domain
  4. Optional: Enable "Preflight Request handling" for advanced CORS scenarios
  5. Optional: Check "Remember this setting for browser restart"
  6. Reload the page - CORS requests are now allowed!

Note: When the extension is not enabled for a domain, it doesn't modify the browser's default CORS behavior at all.

Understanding CORS Modes

NG-Anti-CORS now features two operational modes for more granular control:

1. Basic Mode (Default)

When you simply enable CORS for a domain, the extension will:

  • Allow standard CORS for basic HTTP methods (GET, POST, HEAD)
  • Work for most typical web requests and API calls
  • Enable cross-origin access for simple content types

2. Advanced Mode (with Preflight Handling)

When you enable both CORS and "Preflight Request handling", the extension will:

  • Support advanced HTTP methods (PATCH, DELETE, PUT, OPTIONS, etc.)
  • Handle complex requests with custom headers
  • Process preflight (OPTIONS) requests automatically
  • Support requests with credentials
  • Enable all CORS features for complex APIs

When to use Preflight Handling:

  • When working with RESTful APIs that use methods beyond GET/POST
  • When your requests include custom headers
  • When seeing errors related to "Method not allowed" in preflight responses
  • When using authentication with cross-origin requests

Adjusting Settings ⚙️

For advanced configurations:

  1. Click on the NG-Anti-CORS icon
  2. Select the "Settings" tab
  3. Adjust notification duration and other options
  4. Click "Save Settings"

For Developers 👨‍💻

This plugin is especially useful for:

  • Frontend developers working with APIs
  • Testing web applications in local development environments
  • Debugging CORS issues in production environments
  • API integration and testing

Troubleshooting 🔧

Plugin not working?

  • Make sure the plugin is activated
  • Check if CORS allowing is enabled for the current domain
  • Completely reload the page (CTRL+F5)
  • Check for errors in the developer tools (F12)
  • Verify that the site is actually experiencing CORS issues that need to be bypassed

Privacy and Security 🔒

NG-Anti-CORS:

  • Collects no personal data
  • Sends no information to remote servers
  • Works completely locally in your browser
  • Only stores your preferences for enabled domains

⚠️ Security Notice: This plugin is intended for development and testing purposes. Disable it when visiting sensitive websites as it affects the browser's security mechanisms.

Version History 📝

Version 1.2

  • Two-tier CORS Handling: Separated basic CORS handling from advanced preflight handling
  • Fetch API Proxy: Added intelligent Fetch API proxying that respects extension state
  • Method-based Control: Basic methods (GET/POST) work with just CORS enabled, advanced methods (PATCH/DELETE/etc.) require preflight option
  • Advanced Preflight Handling: New toggle specifically for managing CORS preflight (OPTIONS) requests
  • Better State Management: Fixed issue where the extension was active even when disabled
  • Cross-component Communication: Enhanced messaging between content scripts and background processes
  • Improved UI: Added preflight toggle with helpful descriptions
  • Extended Method Support: Now properly supports all HTTP methods including PATCH, HEAD, PROPFIND and more
  • Credentials Handling: Correctly processes requests with credentials based on preflight setting
  • Comprehensive Error Handling: Added detailed error reporting for troubleshooting

Version 1.1

  • Critical Fix: Corrected the core behavior of the extension. Previously, the extension was incorrectly blocking CORS when disabled. Now it correctly does not modify browser behavior when disabled.
  • Improved UI Labels: Updated status messages and notifications to accurately reflect the extension's functionality

Version 1.0

  • Initial release

Contributing 🤝

Contributions are welcome! If you want to help:

  1. Fork the repository
  2. Create a feature branch (git checkout -b feature/AmazingFeature)
  3. Commit your changes (git commit -m 'Add some AmazingFeature')
  4. Push to the branch (git push origin feature/AmazingFeature)
  5. Open a Pull Request

License 📄

This project is licensed under the MIT License - see the LICENSE file for details.

Developed with ❤️ for the developer community

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[Opera / Chrome] - Anti CORS 1.1

[Opera / Chrome] - Anti CORS 1.1

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@NGxDTV NGxDTV released this 27 May 09:35
v1.1
fc13402

NG-Anti-CORS 1.1 🛡️

The Ultimate CORS Enabler for Developers 🚀

Version
Chrome
Opera

NG-Anti-CORS is a powerful browser extension that allows CORS (Cross-Origin Resource Sharing) requests with just one click. The perfect developer tool for testing APIs and debugging applications in local environments! 🔧

Features ✨

  • Easy to Use 🖱️ - One-click activation for any domain
  • Domain-specific Control 🌐 - Enable CORS requests only for specific domains
  • Visual Indicators 💡 - Color-coded icons show current status
  • Save Settings 💾 - Retain your preferences even after browser restart
  • Customizable Notifications 🔔 - Configure how and when notifications appear
  • Lightweight 🪶 - Minimal impact on browser performance

Installation 📥

  1. Chrome Web Store (recommended):

    • Download the latest Chrome / Opera release
    • Once approved, you'll be able to find it by searching for "NG-Anti-CORS"
    • Click "Add" and confirm the installation

  2. Manual Installation:

    • Download the latest release
    • Unzip the file to a folder
    • Open Chrome/Opera and navigate to chrome://extensions/
    • Enable "Developer mode" (top right)
    • Click "Load unpacked" and select the extracted folder

Usage 🚀

  1. Navigate to a website with CORS issues
  2. Click on the NG-Anti-CORS icon in the toolbar
  3. Enable the toggle for the current domain
  4. Optional: Check "Remember this setting for browser restart"
  5. Reload the page - CORS requests are now allowed!

Note: When the extension is not enabled for a domain, it doesn't modify the browser's default CORS behavior at all.

Adjusting Settings ⚙️

For advanced configurations:

  1. Click on the NG-Anti-CORS icon
  2. Select the "Settings" tab
  3. Adjust notification duration and other options
  4. Click "Save Settings"

For Developers 👨‍💻

This plugin is especially useful for:

  • Frontend developers working with APIs
  • Testing web applications in local development environments
  • Debugging CORS issues in production environments
  • API integration and testing

Troubleshooting 🔧

Plugin not working?

  • Make sure the plugin is activated
  • Check if CORS allowing is enabled for the current domain
  • Completely reload the page (CTRL+F5)
  • Check for errors in the developer tools (F12)
  • Verify that the site is actually experiencing CORS issues that need to be bypassed

Privacy and Security 🔒

NG-Anti-CORS:

  • Collects no personal data
  • Sends no information to remote servers
  • Works completely locally in your browser
  • Only stores your preferences for enabled domains

⚠️ Security Notice: This plugin is intended for development and testing purposes. Disable it when visiting sensitive websites as it affects the browser's security mechanisms.

Version History 📝

Version 1.1

  • Critical Fix: Corrected the core behavior of the extension. Previously, the extension was incorrectly blocking CORS when disabled. Now it correctly does not modify browser behavior when disabled.
  • Improved UI Labels: Updated status messages and notifications to accurately reflect the extension's functionality

Version 1.0

  • Initial release

Contributing 🤝

Contributions are welcome! If you want to help:

  1. Fork the repository
  2. Create a feature branch (git checkout -b feature/AmazingFeature)
  3. Commit your changes (git commit -m 'Add some AmazingFeature')
  4. Push to the branch (git push origin feature/AmazingFeature)
  5. Open a Pull Request

License 📄

This project is licensed under the MIT License - see the LICENSE file for details.

Developed with ❤️ for the developer community

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[Opera / Chrome] - Anti CORS 1.0

[Opera / Chrome] - Anti CORS 1.0

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@NGxDTV NGxDTV released this 20 May 13:16
v1.0
60da6a6

NG-Anti-CORS 1.0 🛡️

The Ultimate CORS Blocker for Developers 🚀

Version
Chrome
Opera

NG-Anti-CORS is a powerful browser extension that bypasses CORS (Cross-Origin Resource Sharing) restrictions with just one click. The perfect developer tool for testing APIs and debugging applications in local environments! 🔧

Features ✨

  • Easy to Use 🖱️ - One-click activation for any domain
  • Domain-specific Control 🌐 - Enable CORS blocking only for specific domains
  • Visual Indicators 💡 - Color-coded icons show current status
  • Save Settings 💾 - Retain your preferences even after browser restart
  • Customizable Notifications 🔔 - Configure how and when notifications appear
  • Lightweight 🪶 - Minimal impact on browser performance

Installation 📥

Note: This extension is not yet available in the Chrome Web Store as it's new and currently under review. We'll update this README once it's approved and published.

  1. Chrome Web Store (recommended - coming soon):

    • Once approved, you'll be able to find it by searching for "NG-Anti-CORS"
    • Click "Add" and confirm the installation

  2. Manual Installation:

    • Download the latest release
    • Unzip the file to a folder
    • Open Chrome/Opera and navigate to chrome://extensions/
    • Enable "Developer mode" (top right)
    • Click "Load unpacked" and select the extracted folder

Usage 🚀

  1. Navigate to a website with CORS issues
  2. Click on the NG-Anti-CORS icon in the toolbar
  3. Enable the toggle for the current domain
  4. Optional: Check "Remember this setting for browser restart"
  5. Reload the page - CORS restrictions should now be bypassed!

Adjusting Settings ⚙️

For advanced configurations:

  1. Click on the NG-Anti-CORS icon
  2. Select the "Settings" tab
  3. Adjust notification duration and other options
  4. Click "Save Settings"

For Developers 👨‍💻

This plugin is especially useful for:

  • Frontend developers working with APIs
  • Testing web applications in local development environments
  • Debugging CORS issues in production environments
  • API integration and testing

Troubleshooting 🔧

Plugin not working?

  • Make sure the plugin is activated
  • Check if CORS blocking is enabled for the current domain
  • Completely reload the page (CTRL+F5)
  • Check for errors in the developer tools (F12)

Privacy and Security 🔒

NG-Anti-CORS:

  • Collects no personal data
  • Sends no information to remote servers
  • Works completely locally in your browser
  • Only stores your preferences for enabled domains

⚠️ Security Notice: This plugin is intended for development and testing purposes. Disable it when visiting sensitive websites as it affects the browser's security mechanisms.

Contributing 🤝

Contributions are welcome! If you want to help:

  1. Fork the repository
  2. Create a feature branch (git checkout -b feature/AmazingFeature)
  3. Commit your changes (git commit -m 'Add some AmazingFeature')
  4. Push to the branch (git push origin feature/AmazingFeature)
  5. Open a Pull Request

License 📄

This project is licensed under the MIT License - see the LICENSE file for details.

Developed with ❤️ for the developer community

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