Creating Digital Images For Print

If your design or layout makes use of raster (bitmap) images, then it is important to make sure your images are sufficient quality for output on press. Please follow these guidelines before placing images in your design or layout.

Image Resolution:

Use only high-resolution images. Resolution is measured in dpi (dots per inch) or ppi (points per inch). Your images must be 300 dpi or greater.

To ensure your image is created at the highest resolution possible, make sure you:

The image above is considered "high-resolution" at 300 dpi or greater.

The image above is considered "low-resolution" at 72 dpi, which may work well for Web pages and look fine on your computer screen, but will not be sufficient quality for press.

Image Color Mode:

The color mode of your image is just as important as the image resolution. For press, we can only accept image types that are CMYK, Grayscale or Bitmap. If your image is RGB, like all images that come from your scanner or digital camera, you will need to convert the file to CMYK. This process will not preserve the RGB colors perfectly, but it is the only way to make the image suitable for press. This also applies to all non-image elements in your design. Make sure all items in your design are set for CMYK.

DO NOT use "Indexed Color," "Duotone," or RGB color spaces.

CMYK is also called 4-color Process. Colors in CMYK images are composed of varying amounts of Cyan, Magenta, Yellow and Black. This is the way a printing press prints color, so it is vital that your image be in this color mode, or, grayscale/bitmap (which only use Black). The image below is a "separation" of the butterfly image above into it's CMYK components.

Image File Type:

When saving your high-resolution, CMYK/Grayscale/Bitmap image to use in another application, be certain to save in one of the following acceptable file formats: