the.com/url

The world's most important sentence nobody reads until it breaks.

means A URL is the web address that tells a browser exactly where to find a specific page or resource on the internet.

from An initialism for Uniform Resource Locator, coined in the early 1990s within the circle around Tim Berners-Lee as the World Wide Web was being built. Each word does plain work: 'uniform' for a single consistent format, 'resource' for whatever the thing is (a page, an image, a file), and 'locator' because it points to where that thing lives. The spec was formalized by the IETF, and the L originally jostled with other letters — you may still meet its cousins URI (Identifier) and the rarer URN (Name).

first one
http://info.cern.ch still resolves today
max length
Browsers choke past roughly 2,000 characters
forbidden spaces
Spaces become %20, the web's awkward cough
inventor
Tim Berners-Lee shaped its syntax in 1994
slash count
The double slash was admittedly a mistake
the.com · every word