CORS on Nginx The following Nginx configuration enables CORS, with support for preflight requests. # # Wide-open CORS config for nginx # location / { if ($request_method = 'OPTIONS') { add_header 'Access-Control-Allow-Origin' '*'; add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS'; # # Custom headers and headers various browsers *should* be OK with but aren't # add_header 'Access-Contr