Simplify your web development workflow with CORS Unblocker , the powerful yet easy-to-use Chrome extension that lets you instantly bypass CORS (Cross-Origin Resource Sharing) restrictions — without any server-side changes.
Perfect for developers, testers, and API integrators, this tool empowers you to test local applications, debug cross-origin requests, and streamline development — all with just one click.
Say goodbye to frustrating CORS errors and hello to seamless API testing!
🛠️ What Is CORS Unblocker?
CORS Unblocker is a lightweight Chrome extension designed to temporarily disable CORS policies enforced by browsers during development.
This allows developers to:
- 🧪 Test local frontends with remote APIs
- 🔄 Debug cross-origin requests during development
- 🚫 Eliminate CORS errors without modifying backend code
It’s ideal for use in development environments , helping you focus on building and testing without unnecessary roadblocks.
⚙️ Key Features That Boost Developer Productivity
✅ Instant CORS Bypass
Enable or disable CORS restrictions with a single click — no configuration or server-side changes required.
🔒 Temporary & Secure
All unblock settings are cleared when the browser closes, ensuring your regular browsing remains secure.
🧑💻 Developer-Focused Design
Built specifically for developers and QA professionals working on API integration, debugging, and frontend testing.
⚠️ Security Awareness
Clear built-in warnings help you understand the potential risks of disabling CORS — so you can make informed decisions.
🖥️ Minimalist UI
A clean, intuitive interface makes toggling the extension fast and frustration-free.
🌐 Safe for Local Use
Designed exclusively for development and testing — does not interfere with live or production environments.
⚡ Plug-and-Play Ready
No setup needed. Just install, enable, and start using immediately.
🌍 Universal Compatibility
Works across all websites, domains, and API endpoints — giving you full flexibility in your development workflow.
🧠 Why You’ll Love Using CORS Unblocker
If you’ve ever encountered the dreaded error:
“Blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header present…”
Then you know how time-consuming and frustrating CORS issues can be — especially during early development stages.
CORS Unblocker solves this by:
- 🕒 Saving time during local development
- 🧩 Simplifying API testing workflows
- 🛠️ Removing dependency on backend teams for quick tests
- 🧪 Making it easier to prototype apps with third-party APIs
Whether you’re building a simple app or working on a large-scale system, this extension helps keep your workflow smooth and efficient.
🛠️ How to Use CORS Unblocker
- Install the extension from the Chrome Web Store .
- Open your development project or API endpoint in the browser.
- Click the extension icon in the toolbar.
- Toggle on “CORS Unblocker” and refresh the page.
- Watch those CORS errors disappear!
When you’re done testing, simply toggle it off — or close your browser to reset everything securely.
🚀 Final Thoughts
In modern web development, CORS errors shouldn’t slow you down . With CORS Unblocker , you get a fast, safe, and developer-friendly way to bypass these restrictions during testing — allowing you to focus on what matters: building great applications.
Install today and transform how you approach cross-origin development.
ℹ️ Frequently Asked Questions (FAQ)
Q: Is CORS Unblocker safe to use?
A: Yes — it’s intended solely for development and testing . All changes are temporary and reset when the browser closes.
Q: Does it work on all websites?
A: Yes! It works on any site or API endpoint where CORS restrictions apply.
Q: Do I need to configure anything after installation?
A: No — just install and toggle it on when needed.
Q: Can I use it in production?
A: We strongly advise against using it in production environments. It’s meant only for local development and testing.
📬 Got Feedback or Suggestions?
We’d love to hear from you! Use the feedback option inside the extension to share your thoughts, report issues, or suggest improvements.
Let’s make CORS easier together
