ModHeader use cases

Common use cases

ModHeader can be used for many purposes. Here is a list of common use-cases that many of our users are using ModHeader for:

Changing IP addressSimulate edge casesSwitch locales and regionsTesting CORSTesting AdSense on localhostTesting AuthorizationToggle feature flags

Modify HTTP headers

ModHeader can be used to modify standard HTTP request and response headers. Here is a list of standard HTTP headers and how you can use ModHeader to modify them:

Accept Accept-CH Accept-CH-Lifetime Accept-Encoding Accept-Language Accept-Patch Accept-Post Accept-Ranges Access-Control-Allow-Credentials Access-Control-Allow-Headers Access-Control-Allow-Methods Access-Control-Allow-Origin Access-Control-Expose-Headers Access-Control-Max-Age Access-Control-Request-Headers Access-Control-Request-Method Age Allow Alt-Svc Authorization Cache-Control Clear-Site-Data Connection Content-Disposition Content-DPR Content-Encoding Content-Language Content-Length Content-Location Content-Range Content-Security-Policy Content-Security-Policy-Report-Only Content-Type Cookie Critical-CH Cross-Origin-Embedder-Policy Cross-Origin-Opener-Policy Cross-Origin-Resource-Policy Date Device-Memory Digest DNT Downlink DPR Early-Data ECT ETag Expect Expect-CT Expires Forwarded From Host If-Match If-Modified-Since If-None-Match If-Range If-Unmodified-Since Keep-Alive Large-Allocation Last-Modified Link Location Max-Forwards NEL Origin Permissions-Policy Pragma Proxy-Authenticate Proxy-Authorization Range Referer Referrer-Policy Retry-After RTT Save-Data Sec-CH-Prefers-Reduced-Motion Sec-CH-UA Sec-CH-UA-Arch Sec-CH-UA-Bitness Sec-CH-UA-Full-Version Sec-CH-UA-Full-Version-List Sec-CH-UA-Mobile Sec-CH-UA-Model Sec-CH-UA-Platform Sec-CH-UA-Platform-Version Sec-Fetch-Dest Sec-Fetch-Mode Sec-Fetch-Site Sec-Fetch-User Sec-GPC Sec-Purpose Sec-WebSocket-Accept Server Server-Timing Service-Worker-Navigation-Preload Set-Cookie SourceMap Strict-Transport-Security TE Timing-Allow-Origin Tk Trailer Transfer-Encoding Upgrade Upgrade-Insecure-Requests User-Agent Vary Via Viewport-Width Want-Digest Warning Width WWW-Authenticate X-Content-Type-Options X-DNS-Prefetch-Control X-Forwarded-For X-Forwarded-Host X-Forwarded-Proto X-Frame-Options