Dexterpen file
File type: Various data file
A .ran file is a drawing or design file created by Dexterpen, a parametric 2D CAD program for Microsoft Windows.
File type category:
Various data file
Date updated: October 12, 2026
Dexterpen was a low-cost parametric 2D CAD program developed by Owen F. Ransen. Its .ran files contain CAD drawing data used by the program.
The format is associated with older Dexterpen installations and appears to be a legacy format that may no longer be supported. Dexterpen is available for Microsoft Windows.
Open a .ran file with the original Dexterpen software on Microsoft Windows. Other CAD programs are not known to provide reliable support for this format.
If Dexterpen is unavailable, the file may be difficult to open because it is a program-specific legacy format.
No known general-purpose converter is available for .ran files. If the file opens in Dexterpen, check whether that installation provides an export function for a more widely supported CAD format.
Software applications that can open ran files:
Microsoft Windows
Dexterpen
Software applications that can edit ran files:
Microsoft Windows
Dexterpen
Software capable of saving ran files:
Microsoft Windows
Dexterpen
Software apps that create ran files:
Microsoft Windows
Dexterpen
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