https://docs.nginx.com/nginx-gateway-fabric/traffic-management/request-response-headers/
Modify HTTP request and response headers | NGINX Documentation
Learn how to deliver, manage, and protect your applications using F5 NGINX products.
http requestresponse headersmodifynginxdocumentation
https://www.montastic.com/tools/http-headers
Free HTTP Header Checker — Analyze Response Headers
Inspect HTTP response headers for any URL. Check security headers, caching policy, server info, and content type. Includes security analysis.
http header checkerresponse headersfreeanalyze
https://vinyl-cache.org/tutorials/hdr_filter.html
Filter request- or response-headers with VMOD re2 sets - Vinyl Cache
response headersvinyl cachefilterrequestre2