Preferences dialog > Advanced Preferences tab


The Advanced Peferences tab shows all raw settings and allows to manipulate them. It is visible in expert mode only.

Most settings can more easily and safely be modified via the other tabs of this dialog box. Normally you should not need to use this display. Do so with caution. Invalid settings can cause errors and/or loss of data. You may be instructed to edit here in order to access experimental features. See more about user settings in the Preferences Overwiew.

Use the Search field to quickly access values and keys grouped by namespace.

List colors

  1. Bold on yellow - value has changed at least once.
  2. Bold on green - value was changed in this dialog.
  3. Normal on green - value was reset to default in this dialog.

After JOSM being restarted all preference settings equal to their default values loose any markings.


To add keys with simple values and with a XML structure.
To edit one selected key/value pair.
Sets all selected key/value pairs to their default value.
Read from file
Imports a JOSM custom configuration XML file. That can contain preferences modifications, commands to download some files or plugins, and even JavaScript code.
After a file import is complete, you can see a detailed log and the changed preferences will be represented. You can reject these changes by pressing Cancel button. Caution: You can not undo reject file or plugin operations (download, delete, etc.), so be careful and do not open scripts from untrusted sources!
Export selected items
Generates a custom configuration XML file automatically. When reading this file, the key-value pairs will replace existing ones or be appended to them (in case of properties containing lists or maps). You can use it together with the Search field to find all preferences you need to backup or share.
launches the popup menu with additional actions:
  • Save ... profile - saves part of preferences related to shortcuts, colors, toolbar and imagery to a separate custom configuration XML files.
  • Load profile - replace existing part of preferences with previously saved fragment (for example, reset all shortcuts to default and then load them from file). User should press OK to confirm changes.
  • Reset preferences - reset all preferences by deleting the preferences.xml file. See Reset preferences also.


The table below contains settings not accessible in the other tabs of the Preferences dialog:

Key Values Default Description
panel.buttonhiding DYNAMIC, ALWAYS_HIDDEN or ALWAYS_SHOWN DYNAMIC See JOSM interface customization
panel.minimized true or false false See JOSM interface customization
panel.docked true or false true if a window is in the side pane or floating
panel.lastHeight integer mixed is used to store the last used height of a panel
panel.preferredHeight integer mixed can be used to overwrite the hard coded preferred height of a panel
widget.always-visible; true or false true if TAB toggles this screen widget
draw.anglesnap.* and probably keys starting with color.draw.angle.snap mixed mixed should be explained at Action/Draw
edit.initial-move-threshold pixels See Action/Select
edit.initial-move-delay ms See Action/Select
message.movedManyElements true or false unset See Action/Select
draw.fullscreen true or false false See Action/FullscreenView
See Action/ZoomToPrevious
properties.presets.visible true See Dialog/TagsMembership true See Dialog/TagsMembership
url.openstreetmap-wiki See Dialog/TagsMembership
selectaction.cycles.multiple.matches true or false false See Action/Select
osm.notes.daysClosed -1, 0 or positive integer 7 See Dialog/Notes
osm.notes.downloadLimit from ... to 10000 1000 See Dialog/Notes
See StatusBar
statusbar.distance-threshold See StatusBar
simplify-way.max-error integer, meters 3 See Action/SimplifyWay
message.way.split.segment-selection-dialog true or false false See Action/SplitWay
mappaint.wireframe.use-antialiasing true or false false See Action/WireframeToggle
curves.circlearc.angle-separation 20 See Action/CreateCircleArc
merge-nodes.mode 0 or 1 or 2 0 See Action/MergeNodes
upload.comment.max-age integer 4*3600*1000 See Changeset
mappaint.fillalpha, mappaint.showicons and couple others See Styles
*.GUI.geometry; Size and position of dialog boxes sets another external browser than the default browser to open external links on windows os (use the browser executable)
browser.unix ["xdg-open", "#DESKTOP#", "$BROWSER", "gnome-open", "kfmclient openURL", "firefox"] sets another external browser than the default browser to open external links on unix os
osm-primitives.showid true or false false displays the objects id beside the object in lists
osm-primitives.showversion true or false false displays the objects version beside the object in lists
propertiesdialog.autoresizeTagsTable true or false false Enables automatic column width of the tags table to fit content, see #14666
zoom.scale-follow-native-resolution-at-load true or false true true means "Scale follows native resolution of layer" is enabled when layer is created

panel is short for changesetdialog, commandstack, conflict, filter, layerlist, mapstyle, notes/note_open, propertiesdialog, relationlist, selectionlist, userlist or validator
widget is short for menu, sidetoolbar, statusbar, or toolbar


The list of preferences is build like this:

  • Not all possible available keys are listed at the beginning.
  • Whenever JOSM internally requests the value of a particular setting, it remembers the key and the default value.
  • Note that a setting is not saved in the preference file, unless the value is different from the default. However JOSM will remember all keys and their default values which were previously requested.
  • This means, that settings related to download may not be in the list, before you did your first download. However, if you already know the key, you can still set it explicitly.

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Last modified 3 months ago Last modified on 2019-08-01T10:10:19+02:00

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