.DOR file extension

To open .DOR files on Windows, install and open Graphisoft Archicad, then use its library/object workflow to import/load the .DOR file (commonly treated as a Door library part).

To open a .DOR file, use Graphisoft Archicad (the common application associated with Archicad door library parts). If you don’t have Archicad, you generally cannot view or edit the content meaningfully—avoid renaming the extension and instead open it within the correct Archicad/GDL workflow.

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Last updated: April 30, 2026 · Reviewed by Julian Stricker

Open on your device

Choose your operating system for a dedicated step-by-step opening guide.

How to open .DOR files

Use these platform-specific instructions to open .DOR files safely.

Windows

Install and open Graphisoft Archicad, then use its library/object workflow to import/load the .DOR file (commonly treated as a Door library part).
If double-clicking doesn’t work, right-click the file → Open with → choose Archicad (or set Archicad as the default app for .DOR if appropriate).
If you don’t have Archicad, ask the sender to provide an Archicad-compatible alternative export intended for your software (or a different deliverable), because .DOR is not a general viewer-friendly format.

Full Windows guide

Mac

Install and open Graphisoft Archicad, then load/import the .DOR file via Archicad’s library/object mechanisms.
If Finder won’t open it, Control-click → Open With → select Archicad.
If you only need to inspect what it is, do not rename it; instead confirm with the sender that it is an Archicad Door library part and request a more shareable format if you are not an Archicad user.

Full Mac guide

Linux

Linux typically does not have common, native support for Archicad .DOR library parts; the practical approach is to transfer the file to a Windows or macOS system with Archicad installed.
If you must investigate the file type, treat it as an opaque data file; avoid using random “converter” tools and instead validate its origin (e.g., from an Archicad library source).

Full Linux guide

iOS

iOS generally cannot open .DOR files directly; store the file in Files and transfer it to a desktop system with Graphisoft Archicad for opening.

Full iOS guide

Android

Android generally cannot open .DOR files directly; keep the file in your downloads/cloud storage and move it to a Windows/macOS computer with Graphisoft Archicad.

Full Android guide

Security notes

.DOR files are commonly tied to Archicad’s GDL/library part ecosystem; treat them as inputs to a complex parser (Archicad). Only open .DOR files from sources you trust.
Avoid downloading or using unknown third-party “.DOR converters” or “openers.” If you need access, use Archicad or request a safer, viewer-oriented deliverable from the sender.
If the file arrived unexpectedly, confirm its origin before opening in Archicad—design-library files can be a vector for malformed content that stresses or exploits file parsers.

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Can't open this file?

These are the most common causes and fixes when .DOR files fail to open.

Common reasons

Windows/macOS says it can’t open the .DOR file
The .DOR file opens, but the door/object is missing or not usable in the project
You’re trying to open .DOR on mobile (iOS/Android) or Linux
The file seems to be the wrong type (unexpected content/behavior)

Fix steps

Install Graphisoft Archicad and open the file through Archicad’s library/object workflow.
If Archicad is installed, use “Open with” and explicitly pick Archicad, then set it as the default for .DOR if you frequently receive these files.

OS-specific troubleshooting

What is a .DOR file?

A .DOR file is most commonly associated with Graphisoft Archicad as a Door library part file, tied to GDL (Geometric Description Language), the scripting system used for parametric objects/library parts. The registered media type for GDL-related content is model/vnd.gdl, and .dor is listed among the associated extensions. In practice, .DOR is used within Archicad’s library/object ecosystem rather than as a general-purpose interchange format.

Background

Graphisoft’s GDL (Geometric Description Language) is the technology behind many Archicad parametric library parts (objects, doors, windows, etc.). GDL is used to define geometry and parameters so objects can adapt to design changes inside a BIM workflow.

Within that ecosystem, .DOR is commonly described as an Archicad Door library part file extension. While the internal structure may be GDL-related, it is not a broadly supported “open anywhere” format; it is primarily meant for Archicad users who place, configure, and manage door objects in projects.

If you received a .DOR file, the most important practical step is identifying whether it came from an Archicad/GDL library context. If it did, treat it as a design-library component and open it in Archicad rather than trying to convert it with generic file converters.

Common MIME types: model/vnd.gdl

Common .DOR issues

Windows/macOS says it can’t open the .DOR file

This usually happens because the system doesn’t have an application associated with .DOR, or Archicad is not installed.

Install Graphisoft Archicad and open the file through Archicad’s library/object workflow.
If Archicad is installed, use “Open with” and explicitly pick Archicad, then set it as the default for .DOR if you frequently receive these files.

The .DOR file opens, but the door/object is missing or not usable in the project

Library parts can depend on how libraries are loaded and how the project/library paths are set up inside Archicad.

In Archicad, confirm the relevant library is loaded and that the .DOR file is included via the library management workflow.
Ask the sender for the complete library package needed for the object (not just a single .DOR file) if you suspect dependencies.

You’re trying to open .DOR on mobile (iOS/Android) or Linux

.DOR is not a common consumer document format and typically requires Archicad on desktop platforms.

Move the file to a Windows or macOS computer with Graphisoft Archicad installed.
If you only need a visual reference, request a separate deliverable from the sender that is intended for viewing (rather than a library-part source file).

The file seems to be the wrong type (unexpected content/behavior)

File extensions can be misapplied. A .DOR file should come from an Archicad/GDL library context; otherwise it may be mislabeled.

Verify the source and context: was it exported from or used by Archicad as a door library part?
If uncertain, do not force open it with unrelated apps; ask the sender what application created it and request the correct file or a different format.

FAQ

What program opens a .DOR file?

.DOR is commonly associated with Graphisoft Archicad as a Door library part file. Archicad is the practical, commonly referenced application for opening it.

Is .DOR the same thing as a GDL script file?

.DOR is associated with Archicad library parts and is related to Graphisoft’s GDL ecosystem. The registered media type model/vnd.gdl lists .dor among associated extensions, but in day-to-day use it’s handled as an Archicad library/object resource rather than a generic standalone script file.

Can I convert .DOR by renaming it to another extension?

No. Renaming doesn’t convert the underlying data. Use Archicad’s supported import/export workflows, or ask the sender to provide an exchange format intended for your software.

Why won’t my phone preview a .DOR file?

Because .DOR is not a common mobile document type and typically needs Archicad on a desktop system. Transfer the file to a Windows/macOS computer with Archicad.

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