New Image

File New will create a new Gimp image in either RGB (color) or Grayscale mode. You can't create a Index image since you will not know which colors your palette should have. Beside working in Index mode is not a good choose instead work in RGB and convert to Index just before saving the Image.

How to create a new image:

Set the resolution
The resolution is how many pixels per length unit you what your image to built up with. The default 72ppi (72 pixels/inch) is good if you want to create web graphics (you can alter the default value in the preference dialog). However if you going to print your image you will probably need a lot more than 72ppi.
You have several chooises about how you want to measure the resolution pixels per inch, mm, points or picas (there is also a option more which will bring up a dialog with even more choices). We suggest that you stick to ppi since that the most common format when you are dealing with images.
You can have different X and Y resolutions by unchecking the chain but that is not recommended.
Set the Size
You have two options either  you can set it directly in pixels in the top frame or in a real world unit in the middle frame. If you are working with web graphics we suggest that you deal with pixels directly. If you going to print your image then setting in a real world unit is the preferred.
Set the mode/type of image
Set the mode to either RGB or Grayscale
Set Fill Type
Foreground takes the currently active foreground color of the toolbox
Background take the currently active background color of the toolbox
White sets the fill color to white no matter what the toolbox color is
Transparent  prevents the image from filling instead you will get a totally "empty" image to start with. 

The Reset button resets all values their default values. OK creates a new image.

Additional Information

For further information see The Gimp User's Manual page XXXX and the Gimp User's Tutorial page YYYY

Shortcut Key

Modifier

Drag and Drop

Xinput

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Index

(/dialogs/file_new.html)

Sorry but the help file for file_new is not yet done.

/Karin & Olof