Checking Raster Images

As you’ve seen in Chapter Four, “Preparing Raster Images,” it’s important that your images are of sufficient resolution at final size, and that you’ve saved the images in an appropriate format and in the correct color space.

If the images you’re creating are your final art (that is, they’re not being placed into an illustration or page-layout application), check them in Photoshop or the application in which you created them. Consult your print service provider to make sure you know their requirements, but here are some general guidelines:

  • Resolution. Raster images should usually be at least 300 ppi (pixels per inch) at their final imaging size. However, there are exceptions—for example, large-format output such as posters, ...

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