URI and URL are both Uniform Resource Identifiers, but they have different meanings.
- URI: A Uniform Resource Identifier (URI) is a string of characters that identifies a resource. A URI can identify a resource by name, location, or both. URIs have two specializations known as Uniform Resource Locator (URL), and Uniform Resource Name (URN).
- URL: A Uniform Resource Locator (URL) is a type of URI that specifies the location of a resource on the Internet. A URL always includes a scheme, which indicates the protocol used to access the resource, such as HTTP or HTTPS. It also includes a hostname, which is the domain name of the server that hosts the resource, and a path, which is the directory and file name of the resource.
In other words, a URI is a more general term that can be used to identify any resource, while a URL is a specific type of URI that identifies a resource on the Internet.
Here is a table that summarizes the key differences between URI and URL:
| Feature | URI | URL |
|---|---|---|
| Definition | A string of characters that identifies a resource | A type of URI that specifies the location of a resource on the Internet |
| Components | Scheme, authority, path, query, fragment | Scheme, authority, path |
| Usage | Can be used to identify any resource | Used to identify resources on the Internet |
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