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description=Display the HTTP headers of any web site. Use the simple web interface or access the Free API to check the http headers.;

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Text of the page (random words):
scanners network nmap port scanner schedule nmap scans openvas scanner schedule openvas scans zmap fast network scan web nikto web scanner ssl tls scan whatweb wappalyzer cms apps wordpress scanner joomla security scan drupal security scan sharepoint security scan recon domain profiler osint ip information lookup free dns ip tools tools network tests traceroute test ping dns queries dns lookup reverse dns find host records subdomains find shared dns servers zone transfer whois lookup ip address ip geolocation lookup reverse ip lookup tcp port scan udp port scan subnet lookup asn lookup banner grabbing search web tools http headers extract page links reverse analytics search research blog tutorials cheat sheets open source tools latest posts research most popular modern threats the attack surface cyber security training resources cowrie honeypot analysis attacking wordpress offensive security tools for sysadmins nessus openvas and nexpose vs metasploitable wireshark tutorial and cheat sheet assessments attack surface assessment vulnerability assessment wordpress assessment about use cases about faq what is a vulnerability scanner pricing login pricing log in http header check review the http headers from a web server with this quick check valid input ipv4 example com https example com remove limits captcha with membership get http headers processing reviewing http headers http response headers tell attackers and defenders more than most developers realise a single request can expose your server software framework security posture and infrastructure identify server software and platform version spot missing or misconfigured security headers detect cookie security weaknesses expose infrastructure leaking via non standard headers http 1 1 200 ok accept ranges bytes content encoding gzip content type text html charset utf 8 expires thu 01 jan 1970 00 00 00 gmt server squarespace set cookie crumb bqd6 secure path strict transport security max age 15552000 x content type options nosniff x contextid 7t7trx73 rbvbkxcn x frame options sameorigin sameorigin success recon warning risk info cache http header check api in addition to the web form above we offer a second way to access the http headers of any web site our http header api will trigger our system to get the headers and display them in a simple text based output access the api using a web browser curl or any scripting language https api hackertarget com httpheaders q http www google com this query will display the http headers from www google com notice that if the web server sends a redirect 301 or a 302 the system will follow the redirect and display each set of http headers the api is simple to use and aims to be a quick reference tool as a free user you may perform up to 20 queries per day or you can increase daily quote with a full membership list of common http headers by compiling all http headers from the top 1 million websites we have generated a list of the 100 most common http response headers use this reference to quickly understand the use cases for the different http headers note that these are the response headers meaning those found in the response from the http server after a browser makes a request top 100 http response headers http header count description content type 834082 denotes the type of media e g text html application json date 833384 date and time the server generated the response case variant of d ate server 786517 information about the server software set cookie 753241 assigns cookies from server to client case variant of s et c ookie capitalisation varies across server software connection 714923 controls network connection keep alive close content encoding 706267 specifies compression type e g gzip case variant of c ontent e ncoding vary 628732 tells caches to store different versions of the response based on request headers cache control 518756 details caching options in requests and responses case variant of cache c ontrol transfer encoding 501318 encoding to be used for transfer of data expires 368014 legacy defines a date time after which the response is stale cache control is preferred and overrides it when present case variant of e xpires content length 334063 size of resource in number of bytes x powered by 307086 reveals backend framework and version can reveal sensitive information version and software link 298609 defines typed links rel to related resources e g preload prefetch pagination pragma 235691 http 1 0 compatibility cache header no cache used alongside cache control for backward compatibility keep alive 226452 specifies how long a persistent connection stays open last modified 208912 last modification date of resource used for caching x content type options 157980 disables mime sniffing and forces browser to use type shown in content type cf ray 128658 cloudflare header a hashed value encoding information about the data center and the request etag 128187 cache validation tag that identifies a specific version of a resource used by caches to validate whether content has changed case variant of et ag e t ag x frame options 127715 legacy clickjacking control that restricts iframe embedding replaced by csp frame ancestors but still commonly deployed and enforced by browsers cf cache status 126487 cloudflare whether the asset was served from cache hit miss expired bypass etc accept ranges 122831 indicates support for range requests usually bytes allowing clients to request parts of a resource strict transport security 119876 forces communication to use https not http case variant of s trict t ransport s ecurity x xss protection 118843 deprecated and no longer enforced by modern browsers replace with csp enabled cross site scripting xss filtering expect ct 104121 deprecated browsers now enforce certificate transparency automatically reported and enforced certificate transparency x cache 69989 used by cdn s to specify whether resource in cdn cache matches server resource set cookie 60055 assigns cookies from server to client case variant of s et c ookie servers differ in header capitalisation age 55989 time in seconds resource has been in proxy cache upgrade 55051 one way to switch from http to https content language 49089 describes the language s intended for the document p3p 42722 deprecated privacy framework limited adoption occasionally present in legacy systems content security policy 42154 csp controls which resources the client can load for the page e g scripts styles images and other resources via 39768 added by proxies can be used for both forward and reverse proxies requests responses alt svc 37745 list other ways to access service e g http 3 on a different port or host x aspnet version 32840 specifies the version of asp net being used access control allow origin 30872 cors header specifying which origins can access the response or a explicit origin x ua compatible 30672 obsolete header used to control internet explorer rendering mode e g ie edge ignored by modern browsers referrer policy 29572 controls how much referrer information is included with outbound requests report to 25911 configures endpoints where browsers send reports e g csp violations network errors deprecations being replaced by reporting endpoints nel 25813 network error logging instructs browser to report network errors e g dns tcp tls failures to a reporting endpoint x download options 22163 obsolete ie only header noopen that forces downloads to be saved still appears in legacy environments x permitted cross domain policies 20996 obsolete adobe flash policy header flash is eol but it still appears in legacy configurations and default templates x proxy cache 19013 custom header indicating reverse proxy cache status e g hit miss common in nginx and similar caching setups etag 18618 cache validation tag that identifies a specific version of a resource used by caches to validate whether content has changed case variant of et ag e t ag x request id 18605 unique request id that associates http requests between a client server and logs x cacheable 17921 custom header indicating cacheability behaviour varies by proxy cdn x dc 17533 custom header indicating which data centre served the request usage varies by platform x sorting hat podid 17528 identifies the shopify pod handling the request for internal load balancing x shopify stage 17526 indicates the shopify environment stage e g production staging x shopid 17371 identifies the shopify store id associated with the request x sorting hat shopid 17367 maps the shop id to a pod for internal shopify request routing x shardid 17358 identifies the database shard handling the shop s data x alternate cache key 17122 shopify caching header that provides an alternative key for cdn cache invalidation x cache hits 12610 custom header showing cache hit count behaviour varies by proxy cdn x varnish 12322 varnish specific header containing request ids on cache hits includes the id of the request that populated the cache x pass why 11081 custom header explaining why a request bypassed the cache rather than being served from it x generator 11055 custom header exposing cms framework sometimes version common recon vector often removed x cache group 10971 custom header indicating cache grouping or internal cache logic meaning varies by proxy cdn x powered by plesk 10806 custom header exposing plesk hosting x aspnetmvc version 10672 exposes asp net mvc version typically disabled in production x powered cms 10542 custom header exposing cms sometimes version often removed x served by 10422 identifies the cdn cache or proxy node that handled the request expires 10282 legacy defines a date time after which the response is stale cache control is preferred and overrides it when present case variant of e xpires x amz cf pop 10198 identifies the amazon cloudfront edge location point of presence pop that served the request x amz cf id 10086 unique identifier for requests handled by amazon cloudfront used for debugging and tracing x drupal cache 9850 indicates whether the response was served from drupal s cache hit or miss x xss protection 9469 deprecated and no longer enforced by modern browsers replace with csp enabled cross site scripting xss filtering server timing 8999 exposes server side timing metrics backend cache db useful for performance debugging content encoding 8825 specifies compression type e g gzip case variant of c ontent e ncoding x timer 8787 fastly header showing request timing broken down into start time time to first byte and total duration x runtime 8641 shows application processing time seconds useful for backend performance insight x ac 8601 wordpress com automattic header showing cache status and data centre host header 8467 custom header with undefined meaning possibly related to host handling access control allow headers 8293 cors header listing request headers allowed in cross origin requests preflight server 8238 information about the server software case variant of s erver date 8127 date and time the server generated the response case variant of d ate x hacker 7676 recruitment ad by automattic com access control allow methods 7662 cors preflight header listing the http methods permitted for cross origin requests e g get post put delete x litespeed cache 7523 litespeed web server cache status header hit miss no cache x turbo charged by 7347 litespeed header indicating server platform strict transport security 6763 hsts informs browser to use https not http case variant of s trict t ransport s ecurity etag 6725 cache validation tag that identifies a specific version of a resource used by caches to validate whether content has changed case variant of et ag et ag x robots tag 6431 controls search engine crawling and indexing for a response e g noindex nofollow x seen by 5897 custom header listing nodes that processed the request x wix request id 5894 unique wix request id used for debugging and tracing x contextid 5894 custom header with a request context id for tracing x mod pagespeed 5578 header showing pagespeed optimisation is active mod_pagespeed ngx_pagespeed x cache status 5341 custom header indicating cache status status 5339 non standard http response status status 200 ok x server cache 5173 custom header showing cache status or behaviour x ray 5099 non standard header with no defined meaning cache control 4889 specifies requests and responses caching mechanisms case variant of cache c ontrol x cache enabled 4525 custom header indicating whether caching is enabled true false access control allow credentials 4407 cors header that tells the browser whether to expose the response to javascript when credentials such as cookies or auth headers are included x server powered by 4335 exposes server side software often removed in hardened configs x adblock key 4311 used by some sites to detect or bypass ad blocking browser extensions x host 4311 custom header carrying host or routing information x nginx cache status 4311 nginx cache status header hit miss bypass expired stale updating revalidated non standard headers in the above table there are a significant number of http headers that have x apppended to the header this denotes the header is non standard it is not a part of the http standard but is often used by web servers web applications and caching systems to pass information between the server application and the browser discover more about hackertarget discover vulnerability scans network intelligence map your attack surface enumerate hosts and identify open vulnerabilities across your perimeter use cases recon web app technology fingerprinting identify frameworks cms platforms and libraries across thousands of targets in bulk whatweb wappalyzer access 30 hosted scanners network tools unlock the full toolkit automated scans dns enumeration port scanning and more view membership else var rawresponse source find formresponse text jquery formresponse html jquery formresult text rawresponse const submitbtn jquery submitbutton submitbtn prop disabled false submitbtn removeclass btn processing submitbtn find normal state removeclass d none submitbtn find loading state addclass d none if typeof grecaptcha undefined grecaptcha reset error function jquery formresponse html an error occurred please try again const submitbtn jquery submitbutton submitbtn prop disabled false submitbtn find normal state removeclass d none submitbtn find loading state addclass d none if typeof grecaptcha undefined grecaptcha reset about from attack surface discovery to vulnerability identification we host tools to make the job of securing your systems easier membership learn more connect mailing list subscribe to the low volume list security news site updates and tool usage copyright hacker target pty ltd 2024 acn 600827263 terms of use and privacy policy powered by open source software we use minimal cookies for analytics and site functionality to improve your experience by continuing to use this site 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