JOSM
JOSM can comfortably load 100MB of OSM XML data, but larger extracts will have severe performance issue.
Features
- Graphic Interface: main menu, toolbars (main, edit), status bar, dialogs; map view.
- Download OSM data (small amount) by bounding box: use slippy map, search by name, or tile number;
- Preset: tag templates grouped in a hierarchy; apply to the currently selected objects.
- Map Paint Styles: custom MapCSS styles;
- Validator: check and fix invalid data.
- Cursor symbols are informative.
Keyboard Shortcuts
A perhaps outdated list of default shortcuts. † denotes customized shortcuts.
C, search actions.
Interface
F3, preset list;
F11, fullscreen (toggle);
F12, preferences;
TAB, dialogs (toggle);
M⇧l, layers;
M⇧t, tags/memberships†;
M⇧s, selection†;
M⇧r, relations;
M⇧o, command stack;
M⇧f, filter;
M⇧m, map styles;
Cw, wireframe view (toggle);
Viewport
+, zoom in about center of map view;
-, zoom out about center of map view;
C,, zoom in about mouse;
C., zoom out about mouse;
1, zoom to data;
2, zoom to layer;
3, zoom to selection;
C←↑→↓, move viewport;
RightMouse, drag to move viewport;
8, previous viewport;
9, next viewport;
Select
s, select mode (rectangle / lasso);
⇧F3, select by preset;
Ca, select all;
Cf, search objects;
Del, delete selection.
Edit
a, draw mode (standard nodes and ways / snap to angle).
Modifiers:
C, disable snapping;
M, disable continuing;
⇧, disable auto-connect.
x, extrude mode (stretch / dual alignment).
Modifiers:
C, move along/parallel;
M, create new way;
⇧, always create nodes.
w, improve way accuracy mode.
C⇧, drag to rotate objects around their geometrical centre;
CM, drag to scale objects around their geometrical centre;
Cm, merge layers (downwards layer-by-layer);
C⇧m, merge selection;
Figure: JOSM Keyboard Shortcuts. Original