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Format

Microsoft Internet Shortcut

Summary

Name
Microsoft Internet Shortcut
Identifiers
  • MIME: text/plain
  • PUID: x-fmt/454
Format type
Text (Structured)
Disclosure
Full
Description
The Microsoft Internet Shortcut format (URL file format) is built upon a plain text file and adopts an "INI" or configuration file style 'section + key-pair' format, to provide machine-readable structure to describe a method of accessing a web page or website. The format enables the encapsulation of the information needed to connect to a website in a file-based object, which can be distributed or saved elsewhere on the user's hard-disk, for example, in enabling bookmarking of web-sites as a user's favorites. The Microsoft Internet Shortcut format included features such as hotkey instructions, allowing users to make use of a combination of keys on a keyboard to launch a website. The association of the '*.url' file-format extension with a web-browser application enabled double-clicking of the file object to launch a website.
Format encoding
Text
Note
https://web.archive.org/web/20120906134656/http://www.fmtz.com/formats/url-file-format/article
File extensions
url
Submitted by
Digital Preservation Department / The National Archives
Developed by
Microsoft Corporation
Supported by
Microsoft Corporation

Internal signatures

Microsoft Windows URL

Description
Signature - 5B 49 6E 74 65 72 6E 65 74 53 68 6F 72 74 63 75 74 5D - ASCII - [InternetShortcut] may further be ammended by two bytes 0x0D 0x0A [CR LF / Carriage Return, Line Feed] at the end of the signature if required. Further, the initial 18 byte sequence may suffer regional differences, additional byte sequences may be required to identify these also.
Provenance
Digital preservation research.

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
35
Byte Sequence
5B496E7465726E657453686F72746375745D
Endianness
Little-endian

Changelog

  • V118

    Release date
    30 April 2024
    • Updated

      Microsoft Internet Shortcut: Description created and documentation links added as part of PRONOM Research Week 2023. Submitted by Ross Spencer.

  • V101

    Release date
    15 February 2022
    • Updated

      Microsoft Internet Shortcut: Broadened the BOF offset from 0 to 0-35. Submitted by The National Library of Australia.