URI | URL | URN

The world of Uniform Resource ___

Here the word resource could be anything, take it as a img on your computer for easier understanding

URI

• URI stands for Uniform Resource Identifier
• A URI contains two things
  • Name
  • Location
• We need URI so identify the resource from its name and also be able to locate it using location

URL

• URL stands for Uniform Resource Locator
• This is basically the address of the resource.

URN

• URN stands for Uniform Resource Name
• This is basically the name of the resource.

Therefore : URI = URL + URN

The URI generic syntax consists of a hierarchical sequence of five components

URI = scheme:[//authority]path[?query][#fragment]

where the authority component divides into three subcomponents:

authority = [userinfo@]host[:port]

             host   port
          ┌───┴───┐ ┌─┴┐
  https://localhost:8080/forum/q/?tag=networking#top
  └─┬─┘   └───────────┬──────────────┘└───────┬───────┘ └───────────┬─────────────┘ └┬┘
  scheme          authority                  path                 query           fragment

I hope you like this article !

Comments

[Colin Stryker]

I've been conflating the two for years. This is helpful to actually get a simple explanation. Thanks!

[Shashwat Verma]

This is really helpful man, I used to think while reading about URL and URI.

[ppezaris]

Excellent information, thanks!

[Irman itu Aku]

Nice info. Thankss