🆚 Clacks Overhead vs. Meta Robots
Compare technologies based on real-world usage data *- 📈 Meta Robots is much more popular than Clacks Overhead.
- 🌍 Meta Robots is more popular in all countries.
- ⭐ Clacks Overhead is particularly popular in the United Kingdom.
Clacks OverheadType
About
Clacks Overhead is a feature based on the concept of semaphore towers from the Discworld fantasy book series written by Sir Terry Pratchett, an English author and humorist.
It was devised by 
Reddit users and allows websites to broadcast a message to the world via the non-standard X-Clacks-Overhead HTTP header. This message is usually dedicated to the memory of Terry Pratchett, reading "GNU Terry Pratchett", though it can contain any text.
Robots directives, implemented via robots meta tag or the X-Robots-Tag HTTP header, provide explicit instructions to web crawlers and search engine robots regarding indexing, link-following, and caching preferences for a web page.
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