COMMON FILE FORMATS IN PHOTOSHOP
If you're one of the many, many people who have found themselves overwhelmed by the sheer number of file formats that Photoshop presents us with when trying to save an image, good news! You can safely ignore most of them!
That's right, out of the 25 file types found in Photoshop's "Save As" dialog box, there's really only a handful of them that most of us will ever use. In this quick guide, we'll look briefly at the essential formats we need to know, or at least be aware of, including the pros and cons of each one and the situations where it makes the most sense to use it!
GIF: This format should not be used for portrait photos, since it only has 256 colors available. It is better for raster version of logos. It can be used to create web animation fi les or images with transparent areas of pixels.
PNG: Meant as an improvement to GIF, PNG has improved transparency capabilities and is a popular format to use for web images, since it has lossless compression technology. However, it does not support CMYK mode, so it is not meant for printing high quality photographic prints.
PSB: Same options as PSD, but for fi les larger than 2G