CORS Preflight & Header Simulator

100% Client-Side

CORS Verdict ALLOWED

Request Flow Preflight Required

Credentials Included (Cookies)

Cache Max-Age 86400s

Configuración de Solicitud & Servidor

Origin URL (Cliente)

Request Method

Custom Request Headers

Server: Access-Control-Allow-Origin

Server: Access-Control-Allow-Methods

Server: Access-Control-Allow-Headers

Server: Max-Age (segundos)

Allow Credentials

Diagnóstico y Resultados CORS