X-Clacks-Overhead

HTTP response header

X-Clacks-Overhead is a non-standardised HTTP header based upon the fictional work of the late great Sir Terry Pratchett. This plugin enables you to add the pre-requisite 'GNU Terry Pratchett' as well as other custom X-Clacks-Overhead headers to Craft.

Header usage statistics

X-Clacks-Overhead response header information and usage statistics.
Websites using header X-Clacks-Overhead52,004
Percentage of websites that use X-Clacks-Overhead header<0.1%
Total discovered header values257
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country United States

X-Clacks-Overhead Directives

X-Clacks-Overhead directives value information and usage statistics
DirectiveShareWebsites countUnique Values

X-Clacks-Overhead header usage distribution by website rank



Geographical Distribution

Header usage distribution by websites across the globe.



Websites utilizing X-Clacks-Overhead

List of websites that use X-Clacks-Overhead header
DomainCountryRankContacts
www.mozilla.org United States178
getpocket.com United States708
heise.de Germany1,539
www.xml.com United States1,567
www.debian.org United States1,797
docs.python.org United States2,015
See full domain list

Common header values

List of top common X-Clacks-Overhead header values
Header valueValue prevalence
GNU Terry Pratchett96.42%
GNU Terry Pratchet0.74%
GNU Natalie Nguyen0.37%
GNU Romana Kitty, GNU Ben Grayman, GNU Michael Hofer, GNU Lincoln Kliman, GNU Larry Scharf0.26%
GNU Terry Pratchett, Douglas Adams0.17%
GNU Terry Pratchett, Pippa Lowe0.16%
GNU Terry Pratchett, Stephen Hawking, Prof. Dr. Georg Riccabona0.16%
GNU ~abraxas0.15%
"GNU Terry Pratchett"0.14%
GNU Terry Pratchett, Paul Brown, Gaz Hunter0.07%
Terry Pratchett, Noirin Trouble Pluinceid, Dan Kaminsky, Kris Nova0.06%
GNU Terry Pratchett, Lester Haines0.06%
GNU James Taylor (@jxtx) Simon Gladman (@slugger70)0.05%
GNU William Hartnell, Patrick Troughton, Jon Pertwee0.05%
GNU Terry Pratchett, John TotalBiscuit Bain0.05%
GNU Terry Pratchett, Stephen Hawking0.03%
GNU Annemiek Lutz0.02%
GNU Terry Pratchett, Eddison the Magic Doggo0.02%
GNU Terry Pratchett, GNU Iain Banks, GNU John Peel, GNU Simon Ricketts0.02%
GNU Terry Pratchett, Lord Windmill0.02%