.PLN File Extension

Archicad Solo Project

3.7  |  49 Votes

What is a PLN file?

A PLN file is a solo project that contains a 3D model created with GRAPHISOFT Archicad architectural designing software. It stores all model data and views generated by Archicad for the project in a native format. PLN projects also contain default settings and library references.

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Screenshot of a .pln file in GRAPHISOFT Archicad 26
PLN file open in GRAPHISOFT Archicad 26

GRAPHISOFT Archicad is a building information modeling (BIM) program architects use to design building structures, interiors, exteriors, and landscapes. It includes many capabilities for designing, modeling, and collaborating.

PLN is the native format for Archicad projects. When you save a project as a PLN file, Archicad creates a PLN file to store the project contents. After saving the project, you can close it and re-open it to edit it further.

To create a PLN file, select File → New, modify the project, and select File → Save or Save as.... The software also allows you to save projects as .PLA archives, .BPN backup projects, and TPL project templates.

NOTE: Archicad only supports projects saved by version 8.1 or later of Archicad.

How to open a PLN file

You can only open PLN files with GRAPHISOFT Archicad in Windows and macOS. To open a PLN file, select File → Open.

How to convert a PLN file

GRAPHISOFT Archicad can convert PLN files to various file types, including the following formats:

  • .PLA - Archicad Project Archive
  • .DWG - AutoCAD Drawing
  • .DXF - Drawing Exchange Format
  • .IFC - Industry Foundation Classes File
  • .C4D - Cinema 4D Model
  • .3DS - 3D Studio Scene
  • .SKP - SketchUp Document
  • .OBJ - Wavefront 3D Object File
  • .STL - Stereolithography File
  • .PDF - Portable Document Format
  • .JPG - JPEG Image
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Programs that open PLN files


Flight Simulator Flight Plan

Developer Microsoft
3.3  |  10 Votes

Configuration file formatted in XML that stores a flight plan for Microsoft's Flight Simulator; specifies parameters to the Flight Planner including departure location, destination, route type, waypoints, cruising altitude, and other information.

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PLN files are used by Flight Simulator version 2000 and later.

Programs that open or reference PLN files

Adobe InDesign Plug-in

Developer Adobe Systems
3.0  |  6 Votes

A PLN file may also be a plug-in for older versions of Adobe InDesign, professional page layout software. It contains information for a third-party plug-in, which adds extra features, such as new styling and editing capabilities, to InDesign when installed.

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InDesign is a desktop publishing application for creating professional layouts for print and digital publishing. Examples of materials you can make with the software include brochures, posters, magazines, and interactive online documents.

While the software comes with many features, it allows you to install components third-party developers created. These components are delivered via PLN files. However, Adobe replaced the PLN format, primarily delivering plug-ins through its Add-ons website.

How to open a PLN file

Adobe InDesign no longer supports PLN files. However, you can install PLN files in older versions of InDesign, such as Creative Suite 5 (CS5).

To install a PLN plug-in file in InDesign CS5, move it to the "Plug-ins" folder in the application installation directory, close InDesign (if it is open), then run the app. The plug-in saved in the PLN file should now be active.

Programs that open or reference PLN files

Adobe InDesign (CC 2013 and earlier)
Adobe InDesign (CC 2013 and earlier)

Spaceman Planogram File

Developer ACNielsen
2.7  |  9 Votes

Planogram created with ACNielsen Spaceman software; used for merchandising applications, such as retail store layouts; utilized by both retailers and suppliers to plan and analyze product placement.

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PLN files can be created with Spaceman Stock Planner or Spaceman Merchandiser. They are saved in a text-based format that can be viewed with Spaceman Viewer.

Programs that open PLN files

ACNielsen Spaceman software

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