As I mention earlier, when you downsample you eliminate pixels and therefore delete information and detail from your image. Although I have emphasized the pitfalls of resampling up, you can sometimes damage your image by downsampling, as well.
Granted, downsampling is sometimes necessary when converting high-resolution print graphics into Web graphics. For example, you may be forced to take images used for a corporate brochure and repurpose them into content for the company’s Web site. You probably won’t notice much degradation in image quality because the images are just being viewed on-screen. In addition, downsampling can occasionally camouflage the moiré patterns caused by scanning halftones. However, you can downsample to the extreme where the images look horrid even on-screen. But just remember, you should never need to make an image smaller than 72 ppi.
Granted, downsampling is sometimes necessary when converting high-resolution print graphics into Web graphics. For example, you may be forced to take images used for a corporate brochure and repurpose them into content for the company’s Web site. You probably won’t notice much degradation in image quality because the images are just being viewed on-screen. In addition, downsampling can occasionally camouflage the moiré patterns caused by scanning halftones. However, you can downsample to the extreme where the images look horrid even on-screen. But just remember, you should never need to make an image smaller than 72 ppi.
Taking Pixels Out of an Image in Photoshop
![Taking Pixels Out of an Image in Photoshop]()
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