Official RuneScape World Map
Using the Main Map
Click and drag the left mouse button on the main map to move the map around. Click on the different percentage buttons at the bottom of the applet to zoom in and out.You can use hotkeys to perform the same actions: 1 - 37% zoom; 2 - 50% zoom; 3 - 75% zoom; 4 - 100% zoom. You can also use the arrow keys on your keyboard to move about the map.
Using the Overview Map
Click on the "Overview" button to bring up the overview map. The red shaded box indicates which area the main map is showing. Left click on the overview map to move the main map around quickly.Pressing o will bring up the world map overview.