Tag
Cors
14 resources tagged Cors across methods, status codes, headers, cookies, guides, and glossary.
Access-Control-Allow-Credentials Header
Learn how Access-Control-Allow-Credentials controls whether browsers expose responses when credentials (cookies, auth headers) are included in CORS requests.
Access-Control-Allow-Headers Header
Learn how Access-Control-Allow-Headers specifies which custom HTTP headers can be used during cross-origin requests in CORS preflight responses.
Access-Control-Allow-Methods Header
Learn how Access-Control-Allow-Methods specifies which HTTP methods are permitted for cross-origin requests in CORS preflight responses.
Access-Control-Allow-Origin
Learn how Access-Control-Allow-Origin controls which origins can access resources in CORS. Covers wildcard, specific origin, and credential configurations.
Access-Control-Max-Age Header
Learn how Access-Control-Max-Age specifies how long browsers can cache CORS preflight results. Reduce preflight requests and improve cross-origin performance.
Access-Control-Request-Headers Header
Learn how Access-Control-Request-Headers tells servers which custom headers will be used in CORS requests. Essential for preflight request handling.
Access-Control-Request-Method Header
Learn how Access-Control-Request-Method tells servers which HTTP method will be used in the actual CORS request. Essential for preflight request handling.
Cross-Origin Resource Sharing (CORS)
Master Cross-Origin Resource Sharing (CORS) for secure cross-origin HTTP requests. Learn preflight requests, headers, credentials, and common error solutions.
Cross-Origin-Embedder-Policy
Learn how Cross-Origin-Embedder-Policy (COEP) controls cross-origin resource loading. Required for SharedArrayBuffer and high-resolution timer access.
Cross-Origin-Opener-Policy
Learn how Cross-Origin-Opener-Policy (COOP) isolates your browsing context from cross-origin documents. Required for SharedArrayBuffer and enhanced security.
Cross-Origin-Resource-Policy
Learn how Cross-Origin-Resource-Policy (CORP) blocks no-cors cross-origin requests to protect resources from Spectre attacks and data leaks.
HTTP OPTIONS Method
Learn how HTTP OPTIONS requests discover server capabilities, supported methods, and handle CORS preflight checks for cross-origin requests.
Origin Header
Learn how the Origin header identifies where cross-origin requests come from. Essential for CORS security policies and preventing cross-site request forgery.
Timing-Allow-Origin
Learn how the Timing-Allow-Origin header specifies which origins can access Resource Timing API data. Enable cross-origin performance monitoring securely.