The National Archives
Search our website
  • Search our website
  • Search our records
Image of software box and CD PRONOM
Welcome (PRONOM  home page) About PRONOM Add an entry
Search Help - opens in a new window Information resources - opens in a new window

*Details: File format summary



Search by keyword Search by file format Search by PUID Search by software Search by vendor Search by lifecycles Search by Migration Pathway

Details for:

Save as... XML | CSV Printer friendly version
Go to:  Summary  |  Documentation  |  Signatures |  Compression  |  Character encoding  |  Rights  |  Reference files   Properties  


External signatures File extension: siard
Internal signatures
Description Signature for SIARD, combining that of a standard ZIP file and the expected XMLNS string: xmlns=““ - Offset currently set to 1024 bytes but it is expected that this could be improved given further test data.
Byte sequences
Position type Absolute from BOF
Offset 0
Byte order  
Value 504B0304*504B0304*786D6C6E733D22687474703A2F2F7777772E6261722E61646D696E2E63682F786D6C6E732F73696172642F312E302F6D657461646174612E78736422
Position type Absolute from EOF
Offset 0
Byte order  
Value 504B01{43-65531}504B0506{18-65531}
Top of page Top of page
The National Archives Newsletter Icon

Send me The National Archives’ newsletter

A monthly round-up of news, blogs, offers and events.