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How To Solve Blocked by CORS policy No Access-Control-Allow-Origin header is present Error

If you've ever encountered the "Blocked by CORS policy: No Access-Control-Allow-Origin header is present" error message, you're not alone. This error message often appears when attempting to make request to a different domain. It's a security feature of modern web browsers that prevents malicious websites from accessing data from other websites without permission. In this post , we will know how to solve this error without any libraries easily.

Solve Blocked by CORS policy

No Access-Control-Allow-Origin header is present - this error message is essentially saying that the domain you're trying to access doesn't allow requests from your domain. This is done to prevent cross-site scripting attacks (XSS), where an attacker could use JavaScript to steal user data or perform malicious actions on behalf of the user.


Thankfully, there are ways to solve this issue. In this article, we'll explore some methods to bypass the "No Access-Control-Allow-Origin header is present" error.

How To Bypass Blocked by CORS policy No Access-Control-Allow-Origin header is present Error

To bypass or fix this error , you can follow the methods given below

Use a Proxy Prefix

You can add a proxy prefix to the URL you're trying to access. This is similar to using a proxy server, but instead of using a separate service, you're simply adding a prefix to the URL.

One popular proxy prefix is "https://cors.iamnd.eu.org/?url=", which is a free service that adds the necessary headers to bypass the CORS policy. To use this prefix, simply add it before the URL you're trying to access. For example:
const url = 'https://cors.iamnd.eu.org/?url=https://example.com/api/data';
fetch(url)
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error(error));

Use a Chrome Extension

Another solution to the "No Access-Control-Allow-Origin header is present" error is to use a browser extension. There are many browser extensions available that can bypass the CORS policy for you. One popular extension is CORS Unblock, which is available for Google Chrome and Mozilla Firefox.To use CORS Unblock, simply install the extension and then click on the extension icon in your browser. You can then enter the URL you want to access and click the "Unblock" button. The extension will then bypass the CORS policy for you and allow you to make the request.

Conclusion

"No Access-Control-Allow-Origin header is present" error can be frustrating, but there are several solutions available to bypass it. You can use a proxy server, a browser extension, or a proxy prefix to make the request. Keep in mind that using a proxy server or a browser extension can be device-dependent, so adding a proxy prefix to the URL is the most universal solution. By using these methods, you can access data from other domains without running into the CORS policy error.

FAQ

How To Fix Blocked by CORS policy No Access-Control-Allow-Origin header is present Error

Using Proxy Prefix , You Can Solve This Error

What is the proxy prefix url to bypass blocked by cors policy error

https://cors.iamnd.eu.org/?url=yoururlhere

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