Make images black and white
1. Open Seashore
2. Close “New Image” window
3. Go to “File” and “Open”
4. Select the image you want to edit, click “Open”
5. Go to “Image” and “Mode”, click “Greyscale”
6. Go to “File” and click “Save As” to save the image.
7. Give your image a name, select the file format and click “Save”
Done.