[[TranslatedPages]]
== JOSM Applet ==

JOSM can be used in different ways. It is a standalone application, a webstart application and a Java applet. This page describes the usage as Java applet.

The URL for the access to JOSM as Java applet is [/applet]. This URL supports additional arguments:
||=argument=||=default=||=description=||
||width||100%||width of the applet area||
||height||100%||height of the applet area||
||url||-||URL to be loaded at startup||
||lang||-||Language code to use for the software||

The applet has some differences compared to the normal JOSM.

* Not all options are available. For example all functions accessing local files are disabled.
* Preferences are stored on the JOSM server (not OSM server).
  * Either you are logged in on the JOSM website or the applet will ask you to provide login data on startup.
  * You can use the applet also without login, but you can't load/save preferences in this case.
  * You need to upload preferences to server to keep them in following sessions (last entry in edit menu).
  * It is recommended to use [wiki:Help/Dialog/OAuthAuthorisationWizard OAuth], or OSM username will be saved in plaintext on JOSM server (password is removed). 

NOTE: Do not confuse JOSM and OSM logins. They are separate.