How do URL shorteners work?

Related questions

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Tags

1. #enter
2. #command
3. #browser
4. #transmit
5. #because
6. #redirection
7. #redirect
8. #fetch
9. #requested
10. #function
11. #directing
12. #actually
13. #works
14. #called
15. #sends
16. #server
17. #shortener