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Revision Date: 27 August 2015

File Menu

The File menu contains commands to open, acquire, close, save and print images with paint.net. These options behave similarly to other document authoring and image editing programs.

File Menu File Menu

File New icon New

This creates a new, blank, single layered image. The single layer will be filled with white.

The default canvas size is 800 x 600 pixels, or the size of any image contained in the clipboard.

This dialog is displayed when File » New is invoked.

New New

The Maintain aspect ratio checkbox locks the ratio between width and height so that it remains the same as the current image, selection or the clipboard image.

An estimate of the image size is displayed at the top of the dialog. This can be used to approximate how much memory paint.net will require to open the image.  Adding new layers will increase this memory overhead. The saved size of the image will usually be less than the new image size. This is because compression is used by most file formats.

The Pixel size, Resolution and Print size can be altered from within the dialog. Changing one set of parameters affects the other set of parameters as Resolution is used to convert Pixel size to Print size and vice versa.

Changing the Units recalculates the Pixel size, Resolution and Print size to use the new units. No actual changes to the image are made when the Units are changed.

File Open icon Open

This allows you to open an existing image for editing. The opened image will be added to the image list and displayed in the Editing Window.

Open Recent

Illustrated above, Open Recent sub-menu allows quick access to the last eight images opened with paint.net. Each image is accompanied by a thumbnail to help with identification.

There is a command to Clear this list in the Open Recent sub-menu.  This removes all entries from the Open Recent list which can be useful if the image directory has been changed or renamed.

Acquire

This sub-menu contains one item: From Scanner or Camera. This allows a new image to be acquired from either a scanner or camera attached to the computer. The scanner or camera must support Windows Image Acquisition 2.0 (WIA).

Acquire Acquire

File Close icon Close

This closes the current image. If there are unsaved changes, a prompt will appear asking for confirmation before the closure proceeds.

Unsaved Changes Unsaved Changes

File Save icon Save

This command saves the image with the current filename. If the image has not been previously saved, or if the file type specified requires configuration (PNG, BMP, GIF, TGA or JPEG but not PDN or TIF), then the Save Configuration dialog will be presented. If the image is unnamed (that is, if it's still called "Untitled"), a filename will need to be supplied.

When saving JPEG images, the quality of the image can be configured. For GIF images, transparency and dithering options are presented. TGA images may be configured to save at 24 or 32-bit, and with or without RLE compression.

The dialog below shows a preview of how the image will appear when loaded with another application (or paint.net). The file size is shown below the preview. The configurable options help optimize quality vs. file size.

Save Configuration Save

File Save As icon Save As

When using the File » Save command the filename, format location and settings previously specified will be reused to overwrite the existing image. The File » Save As... command allows a new name, format, location and settings to be applied. This is extremely useful to create a copy of an edited image while retaining the untouched original.

File Print icon Print

This command opens the built-in Windows Photo Printing interface so the image can be sent to an attached printer. The Printing Interface presents a simple wizard-based dialog to guide users through the printing process.

Print Print

Exit

Use this to exit (close) paint.net. If unsaved changes have been made, a prompt will appear giving the option to save the image(s)before the application exits.

Unsaved Changes on Exit Unsaved Changes