CORS-testare

Testa CORS-rubriker foer alla URL:er. Kontrollera Access-Control-Allow-Origin, metoder och rubriker.

URL att testa

Origin-rubrik

Foerfraagningsmetod

Gratis CORS-testare Online

Ange en URL och origin foer att testa CORS-rubriker direkt fraan din webblasare.

Hur man testar CORS-rubriker

Ange URL:en att testa
Staell in Origin-rubriken
Valj HTTP-metod
Klicka paa "Testa CORS"

Funktioner

Testa alla URL:er foer CORS
Skicka preflight OPTIONS-foerfraagningar
Visa Access-Control-Allow-Origin
Kontrollera credentials-stoeed
Webblasarbaserad CORS-test

Vanliga fraagor

Vad aer CORS?

CORS aer en saekerhetsmedanism som tillaater en webbsida att begoera resurser fraan en annan domaan.

Vad aer en preflight-foerfraagan?

En OPTIONS-foerfraagan som webblasaren skickar foere vissa cross-origin-foerfraagningar.

Vad betyder Access-Control-Allow-Origin?

Denna rubrik anger vilka origins som faar komma aat resursen.

Varfoer blockeras min CORS-foerfraagan?

Foerfraagningar blockeras naer servern inte inkluderar Access-Control-Allow-Origin.

Kan jag testa CORS i webblasaren?

Ja. Detta verktyg skickar foerfraagningar direkt fraan din webblasare.

Relaterade verktyg

HTTP Status Codes HTTP Request Builder URL Parser

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How to Use

Enter the API endpoint URL to test
Select HTTP method and add headers if needed
Click Test to send the CORS preflight request
Review the CORS headers in the response

Common Use Cases

Debugging CORS errors in APIs
Verifying server CORS configuration
Testing preflight request handling
Checking allowed origins and methods

Frequently Asked Questions

What is CORS?

CORS (Cross-Origin Resource Sharing) is a security mechanism that controls how web pages can request resources from a different domain.

Why am I getting CORS errors?

The server must include proper Access-Control-Allow-* headers. Without these, browsers block cross-origin requests for security.

Can I fix CORS on the client side?

No. CORS must be configured on the server. Client-side workarounds like JSONP are outdated and insecure.