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What Is Crossdomain ?

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Crossdomain is a type of security that prevents one website from accessing data on another site. It is important to use cross-domain when creating an API and for applications that pull in data from different sources.

For example, Google Maps pulls in address information into the map, which would violate the cross-domain policy if it were not for this security feature. Without it, any website could access your bank account information if you pulled up your bank’s web page while logged into your online banking account (cross domain).

In this blog post, I am going to be talking about crossdomain. You might not know what that is or what it means, but in the next few minutes you will have a much better understanding of crossdomain and how it affects your life. 

I want you to think back to when you were younger and would go outside with your friends and play games like tag or football, well one day someone decided they wanted to play a game called ‘crossdomain’ where they would stand in front of another kid playing basketball so he couldn’t shoot, if the person in front was hit by the ball then he/she would become an “X” on their face until everyone who played had been tagged. This game isn’t just for kids though.

In this blog post, I will be discussing what crossdomain is and why it matters to your business. Crossdomain can help companies protect their data by enforcing security policies for websites that are hosted on other domains. This helps prevent unauthorized access to sensitive information such as credit card numbers or personal information.

Many companies use these techniques but may not realize the importance of having a secure website with crossdomain enforced. If you would like more details about how you can protect your company’s data using crossdomain.

Benefits of Crossdomain-

As a web developer, it is often necessary to develop applications that receive data from other sources. For example, if you are developing a Flash site that incorporates advertising from 3rd party ad servers it may be necessary for your animation to communicate with the ad server in order to display ads and obtain performance statistics.

However, many times web browsers strictly enforce security policies on their clients. These security policies are in place to protect the user from malicious websites that might want to steal the user’s identity, session information, or send spam email.

stop spamming
image credit- Pixabay

The following sections describe how browsers restrict communication between domains and what you can do about it.

Browsers use a security model known as the Same Origin Policy to restrict communication between domains. The Same Origin Policy states that a website can only access data from other domains if those domains have been explicitly authorized by the user.

This means that if you are developing a Flash site and you want to include advertising from a 3rd party ad server, you must first get the user to authorize your site to access the ad server.

The process of authorizing a site is known as “crossdomain loading” and is accomplished by including a crossdomain policy file on your web site. A crossdomain policy file is a text file that contains a list of domains that are authorized to communicate with your site.

Therefore, before your animation can communicate with the 3rd party ad server it must obtain a crossdomain policy file from that ad server and include it on your site.

For security reasons all browsers support only a limited number of content types in their cross domain policies. For example, some browsers only allow you to authorize image or SWF files to be loaded from other domains.

This means that if you are trying to develop a Flash application that communicates with a 3rd party web service, you may not be able to do so using the standard crossdomain policy file.

In these cases you must use a slightly more complex technique known as “cross origin resource sharing” (CORS). CORS allows you to authorize any type of content to be loaded from other domains.

However, using CORS can be more complex and may require you to write custom code to handle the communication between domains.

Despite the security restrictions imposed by browsers, there are many benefits to using crossdomain loading. First, crossdomain loading allows you to develop web applications that allow arbitrary domains to communicate with each other.

Second, crossdomain loading allows you to easily include 3rd party resources such as images and SWF files on your web site.

Why is Crossdomain Important in Blogging World-

When it comes to blogging, crossdomain is an important term that you need to be aware of. Simply put, crossdomain refers to the ability for different domains (or websites) to interact with each other. This is a critical feature for bloggers because it allows them to share content and collaborate with other bloggers on a wider scale.

For example, if you want to include a video from YouTube on your blog, crossdomain access is required. If you need to add an image from Flickr onto your post, then crossdomain access must be enabled for this to work properly.

Crossdomain can also help you in technical ways too. For example, many web-based services provide API’s, which are basically sets of pre-written code that allow your website to access their service.

One example of this is Google Analytics. You can install this on your blog so you can track traffic and visitors with detailed accuracy. The only way for Google Analytics to work properly though is if crossdomain is enabled.


Nowadays, many popular blogging platforms come with crossdomain enabled by default. However, it’s always a good idea to check this setting just to be sure.

Crossdomain is an important term that you need to be aware of when it comes to blogging. By understanding what it is and how it works, you’ll be able to take advantage of its many benefits and create a successful blog that stands out from the rest.

Crossdomain is important for security reasons. By allowing different domains to interact with each other, it becomes harder for malicious actors to exploit vulnerabilities in one domain in order to gain access to data or functionality in another domain.

Crossdomain also helps prevent certain types of attacks, such as cross-site scripting (XSS) and cross-site request forgery (CSRF).

Another important benefit of crossdomain is that it allows web applications to use AJAX calls to communicate with servers that are located on different domains. This can be extremely useful for developing complex web applications, as it eliminates the need to duplicate code across multiple domains.

Advantages of Crossdomain-

  1. Crossdomain allows developers to easily access data from different sources and consolidate it into a single cohesive application. This can improve the efficiency and performance of the application overall.
  2. Crossdomain also facilitates communication between different servers and web domains. This can benefit data sharing, content delivery, and application performance.
  3. Crossdomain allows for the easy development of applications that combine APIs from several different sources. For example, an application may be created to consolidate news feeds, weather reports, stock prices, and real-time email updates into a single location
  4. Crossdomain can also help improve security by allowing different applications to interact with one another while still remaining separate and insulated from possible malicious attacks.
    malicious attacks.
    image credit- Pixabay
  5. Finally, crossdomain can provide a more streamlined development process by eliminating the need for developers to create multiple custom scripts or modules in order to access data from separate sources.

Disadvantages of Crossdomain-

1. Cross-domain requests were originally implemented in the Netscape 2.0 browser. They were meant to allow a large number of small files (graphics, scripts, stylesheets, etc.) be retrieved from multiple Web domains without having to wait for each transfer to complete before starting the next one. This was a significant advantage in an era where the average Web page was only a few kilobytes in size.

2. Today, cross-domain requests are used to bypass security restrictions and allow communication between domains that would otherwise be prohibited by the Same Origin Policy. This can be exploited by attackers to inject malicious code into otherwise trusted websites. Cross-domain requests can also be used to steal sensitive data from users who are logged into other websites.

3. In addition, cross-domain requests can significantly slow down the loading of Web pages. This is because the browser must first make a request to the target domain, wait for the response, and then send the request to the source domain. If the source domain needs to be requested as well (which is often the case), then this process must be repeated all over again.

4. Most modern browsers support the ability to limit cross-domain requests, which can reduce transfer times by limiting the number of simultaneous requests being made.

Quick Links 

Conclusion- is a free service where you can publish your content to multiple blog platforms, social media sites and more in one place. You don’t need to know how to code or have any technical skills at all!

The platform was created by someone who wanted the same thing as many other people – an easy way for them to share their thoughts with friends and family on various different networks.

To learn more about crossdomain please read our blogs section that has been updated regularly with information from those behind this exciting project.

Cross-domain tracking is a method that can be used to track visitors across websites, and it’s an excellent way to measure the performance of your advertising campaigns. Let’s talk about how cross-domain tracking works and why you should use it in your marketing strategy.  

Cross-domain is a term that refers to the ability for separate domains or servers with different IP addresses to have access and share data. This process of transferring information across two sites is commonly used by web developers in order to improve security, increase usability, and promote site stability.

If you are interested in learning more about cross domain functionality, please contact us today! We would be happy to help answer any questions you may have regarding this topic.



Jitendra Vaswani is the founder of SchemaNinja WordPress Plugin, prior to SchemaNinja he is the founder of many internet marketing blogs, and He is a successful online marketer & award-winning digital marketing consultant. He has been featured on HuffingtonPost, BusinessWorld, YourStory, Payoneer, Lifehacker & other leading publications as a successful blogger & digital marketer. Jitendra Vaswani is also a frequent speaker & having 8+ yrs experience of in the Digital Marketing field. Check out his portfolio( Find him on Twitter, & Facebook.