URI schemes

The scheme of a URI is the first part of the URI, before the : character. It indicates which protocol the browser must use to fetch the resource. The scheme may affect how the rest of the URI is structured and interpreted.

Syntax

protocol:

• protocol
  • : A sequence of characters that identifies the protocol to use. It should consist of only alphanumeric characters and the +, -, and . characters. Common schemes are:
    • blob
      • : Binary Large Object; a pointer to a large in-memory object
    • data
      • : Data directly embedded in the URL
    • file
      • : Host-specific file names
    • ftp
      • : {{Glossary("FTP","File Transfer Protocol")}} 
    • http / https
      • : Hyper text transfer protocol (and secure connections) ({{glossary("HTTP")}} /{{glossary("HTTPS")}} )
    • javascript
      • : URL-embedded JavaScript code
    • mailto
      • : Electronic mail address
    • resource {{Non-standard_inline}} 
      • : Firefox and Firefox browser extensions to load resources internally
    • ssh
      • : Secure shell
    • tel
      • : Telephone
    • urn
      • : Uniform Resource Names
    • view-source
      • : Source code of the resource
    • ws / wss
      • : WebSocket connections (and secure connections)

Specifications

{{Specifications}} 

See also

• URIs
• Data URLs
• Resource URLs
• IANA list of URI schemes