Format

Graphisoft Archicad Project

Summary

Name: Graphisoft Archicad Project
Version: 6-9
Identifiers: PUID: fmt/1955
Format type: Aggregate
Description: Archicad is a proprietary architectural and Building Information Modelling (BIM) software application produced by Graphisoft. Files with the .pln extension are the standard working format, whereas files with the .pla extension are the Archicad archive file type, that bundles together all components, linked images and textures into a single package. This signature does not currently distinguish between specific Archicad format types. This signature might identify Graphisoft Archicad Project files from versions other than 6-9; we hope to broaden this entry with further research.
File extensions: pla, pln
Source: Digital Preservation Department / The National Archives
Developed by: Graphisoft

Internal signatures

Graphisoft Archicad Project versions 6-9 (Intel Mac, little-endian)

Note: Absolute from beginning of file, magic bytes: mm*ArchiCAD

Byte sequences

Min Frag Length: Absolute from BOF
Offset: 0
Max offset: 0
Byte Sequence: 6D6D*4172636869434144
Endianness: None

Graphisoft Archicad Project versions 6-9 (big-endian)

Note: Absolute from beginning of file, magic bytes: MM*ArchiCAD

Byte sequences

Min Frag Length: Absolute from BOF
Offset: 0
Max offset: 0
Byte Sequence: 4D4D*4172636869434144
Endianness: None

Graphisoft Archicad Project versions 6-9 (Intel Windows, little-endian)

Note: Absolute from beginning of file, magic bytes: WW*ArchiCAD

Byte sequences

Min Frag Length: Absolute from BOF
Offset: 0
Max offset: 0
Byte Sequence: 5757*4172636869434144
Endianness: None

Changelog

Added in V118

Release date

30 April 2024

Graphisoft Archicad Project 6-9: Signature researched and samples provided by Digital Preservation Department, The National Archives (UK).

Graphisoft Archicad Project 6-9: Full entry added. Submitted by Digital Preservation Department, The National Archives (UK).