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Default Settings

LinkCAD persists your preferred settings between sessions. Configure defaults via Tools → Options or through the command line.

Options Dialog

The Options dialog (accessible via Tools → Options) contains tabs for:

General Options

  • Default directory — starting directory for file dialogs
  • Default font — font used for text elements without an explicit font
  • Font path — directories to search for font files
  • Save settings on exit — persist current option values

Import/Export Defaults

Each format has its own set of persistent defaults. When you change an import or export option, that value becomes the default for future conversions.

To reset all options to factory defaults, delete the settings file in %APPDATA%\LinkCAD.

Tool Defaults

Tool parameters (e.g., polygon merge tolerance, arc detection precision) are also saved as defaults.

Saving Settings from the Command Line

linkcad --save-settings --input-format GDSII --output-format DXF

The --save-settings flag persists any format-specific options specified on the same command line.

Settings Storage

Settings are stored in %APPDATA%\LinkCAD\options_defaults.json. This file can be copied between machines to share configurations.