Version 19 (modified by, 2 years ago) (diff)



Our preference data is composed of a set of name->value pairs. The setting names are often "namespaced" with dot ('.') separated words. Many JOSM plugins will store preferences grouped in a namespace.

You can get a similar raw view by viewing this file, but this 'Advanced' preferences panel is intended to provide a easier alternative.


Most of the settings can be reached via menus

Other preferences



Some descriptions can be found in Help/Preferences/ImportExport (stub)

Default location


In short, try opening Explorer window and paste following text in location, then hit enter: %APPDATA%\JOSM.


Probably outdated info below:

  • Under Windows Vista and newer, the josm located in C:\Users\username\AppData\Roaming\JOSM.
  • Under older Windows versions, this is in C:\Documents and Settings\username\Application Data\JOSM.


hidden system folder ~/.josm

To show the contents of this hidden folder, use the file manager and enter "~/.josm" in the address line (if no address line is visible just try to enter a letter and hopefully a popup to enter the address will open). Alternatively it is possible to "show hidden" files and folders in the file manager, using the keyboard shortcut Ctrl+H.


hidden system folder ~/.josm

To show the contents of this hidden folder, use the Finders Go to folder menu command (Cmd+Shift+G), and enter "~/.josm") in the dialog that pops up.

Auto save subfolder

Utilized by autosave function.

See also