Same-Origin Policy Tester
Test cross-origin requests and evaluate Same-Origin Policy restrictions.
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Same-Origin Policy Tester
- Consider using CORS headers to allow cross-origin requests
- You may need to implement a CORS preflight request handler
Example Scenarios
Common
Security
Edge Cases
Analyze Cross-Origin Request Behavior
Simulate cross-origin requests and understand how browsers enforce the Same-Origin Policy.
Simulate Cross-Origin Requests
Test requests between different origins to analyze Same-Origin Policy enforcement.
Supports Various Request Types
Test XHR, fetch, images, scripts, styles, iframes, and forms for cross-origin behavior.
Get Security Recommendations
Receive warnings and best practices to resolve blocked cross-origin requests.
How to Use
Simple 4-step process
Step 1
Enter the source and target origins, including scheme, host, and port.
Step 2
Select the request type (XHR, image, script, iframe, etc.) and access type.
Step 3
Run the test to check whether the request is allowed or blocked.
Step 4
Review warnings and recommendations for resolving policy restrictions.
Frequently Asked Questions
Everything you need to know about our process, pricing, and technical capabilities.
See Full FAQThe Same-Origin Policy restricts how documents and scripts from different origins can interact to prevent security risks.
Using Cross-Origin Resource Sharing (CORS) headers allows controlled access to resources from different origins.
Requests may be blocked due to different schemes, hosts, or ports. Using HTTPS and proper CORS policies can help.
No, this tool only simulates how browsers enforce the Same-Origin Policy for learning and debugging purposes.
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