Import a kml-file. Polygons are shown not filled - as polylines. Click 'Edit lines' and dragable points will be shown. The coordinates will be presented in the text area. To edit a line or shape, mouse over it and drag the points (click 'Edit lines' first). Click on a point to delete it. The imported kml-file will not be affected. Copy and paste the new coordinates in the local kml-file. Upload the edited local kml-file to your server.

I have stored polyline kml coordinates for islands, coastlines and lakes. Feel free to use them if you like. Choose a shape from the drop-down menu. Click on 'Submit', and the line/outline will be presented on the map, with the latitude and longitude coordinates in the text area. You may edit the coordinates before you copy them.

If a coastline is part of the shape you want to create, you may use templates and build on them
Build Google maps polylines and polygons from templates

Some of the available islands are Aland, Azores, Bali, Borneo, Canary Islands, China's Hainan, the islands of Denmark, Corsica, Cuba, Cyprus, Falkland, Faroe, Great Britain/United Kingdom, Iceland, Ireland, Isle of Man, Jamaica, Japan, Java, Madagascar, Madeira, New Guinea, New Zealand, Philippines' islands (Balabac, Balut, Basilan, Bilirian, Bohol, Bucas, Bulan, Burias, Busuanga, Calamian, Camiguin, Catanduanes, Cebu, Culion, Dinagat, Dumaran, Guimaras, Jolo, Leyte, Lubang, Luzon, Marinduque, Masbate, Mindanao, Mindoro, Negros, Palawan, Panaon, Panay, Patnanungan, Polillo, Samar, Sarangani, Siargao, Siquijor, Suluarch, Tablas, Tarawakan, Tawitawi), Russia's Sakhalin, Sardinia, Solomon, Sri Lanka, Sulawesi, Sumatra, Sweden's Gotland, Taiwan, Tasmania, Trinidad.

Some of the available lakes are Aral Sea, Baykal, Black Sea, Caspian Sea, Great Bear Lake, Great Lakes (Erie, Huron, Michigan, Ontario, Superior), Great Slave Lake, Ladoga, Lake Winnipeg, Managua, Nicaragua, Onega, Titicaca, Vanern, Victoria

This is a tool I use to edit kml files I have made for my Google API maps. I create the files with my
Online Google maps v3 tool

Contact: Kjell Scharning