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  
 

Signatures
External signatures File extension: ai
Internal signatures
Name Adobe Illustrator 3.x v1
Description The first line of the file is a unique comment that declares the file contains a Postscript program and identifies the version of the Document Structuring Conventions to which the document conforms as 2.0 or 3.0. The first line may also specify that the file conforms to a version of the Encapsulated PostScript File format (EPSF). The prolog contains %%DocumentNeededResources: and the continuation %%+ procset Adobe_Illustrator_AI3 or %%+procset Adobe_IllustratorA_AI3
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 0
Byte order  
Value 252150532D41646F62652D322E30{16-512}2525446F63756D656E744E65656465645265736F75726365733A{1-512}25252B2070726F637365742041646F62655F496C6C7573747261746F72(5F414933|415F414933)
Name Adobe Illustrator 3.x v2
Description The first line of the file is a unique comment that declares the file contains a Postscript program and identifies the version of the Document Structuring Conventions to which the document conforms as 2.0 or 3.0. The prolog did not contain %%DocumentNeededResources: but did contain %%DocumentSuppliedResources: and the continuation %%+ procset Adobe_Illustrator_AI3 or %%+procset Adobe_IllustratorA_AI3
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 0
Byte order  
Value 252150532D41646F62652D322E30{16-512}2525446F63756D656E74537570706C6965645265736F75726365733A{1-512}25252B2070726F637365742041646F62655F496C6C7573747261746F72(5F414933|415F414933)
Name Adobe Illustrator 3.x v3
Description The first line of the file is a unique comment that declares the file contains a Postscript program and identifies the version of the Document Structuring Conventions to which the document conforms as 2.0 or 3.0. The first line may also specify that the file conforms to a version of the Encapsulated PostScript File format (EPSF). The prolog contains %%DocumentNeededResources: and the continuation %%+ procset Adobe_Illustrator_AI3 or %%+procset Adobe_IllustratorA_AI3
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 0
Byte order  
Value 252150532D41646F62652D332E30{16-512}2525446F63756D656E744E65656465645265736F75726365733A{1-512}25252B2070726F637365742041646F62655F496C6C7573747261746F72(5F414933|415F414933)
Name Adobe Illustrator 3.x v4
Description The first line of the file is a unique comment that declares the file contains a Postscript program and identifies the version of the Document Structuring Conventions to which the document conforms as 2.0 or 3.0. The prolog did not contain %%DocumentNeededResources: but did contain %%DocumentSuppliedResources: and the continuation %%+ procset Adobe_Illustrator_AI3 or %%+procset Adobe_IllustratorA_AI3
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 0
Byte order  
Value 252150532D41646F62652D332E30{16-512}2525446F63756D656E74537570706C6965645265736F75726365733A{1-512}25252B2070726F637365742041646F62655F496C6C7573747261746F72(5F414933|415F414933)
Name Adobe Illustrator 3.x v5
Description The first line of the file is a unique comment that declares the file contains a Postscript program and identifies the version of the Document Structuring Conventions to which the document conforms as 2.0 or 3.0. The prolog did not contain %%DocumentNeededResources: but did contain %%DocumentSuppliedResources: and the continuation %%+ procset Adobe_Illustrator_AI3 or %%+procset Adobe_IllustratorA_AI3
Byte sequences
Position type Absolute from BOF
Offset 0
Maximum Offset 0
Byte order  
Value C5D0D3C6
Position type Variable
Byte order  
Value 252150532D41646F62652D332E30{16-512}2525446F63756D656E74537570706C6965645265736F75726365733A{1-512}25252B2070726F637365742041646F62655F496C6C7573747261746F72(5F414933|415F414933)
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.

Sign up
About our privacy policy