As you learn and become more familiar with Adobe Photoshop you will likely notice that Photoshop
allows you to save images in many different formats or file types.
Having a working knowledge and understanding of these different image formats is essential to
making the most of your digital photo projects.
While they are many different image types the following is a description of the most common file
types you will use when working in Photoshop.
Digital Image File Formats
PSD
If you use Photoshop for your digital photo editing then PSD is probably the most important file
format that you need to know. A PSD file is a Photoshop file format and is your best option when
working on digital photos for two main reasons. First of all, PSD files allow the user to work in
layers and channels and save work being done without compressing the layers. This of course
usually results in a large file size. Secondly, PSD files do not lose image quality as you work on
images because there is no compression when the file is saved resulting in lost data. It is always
best to save your work as a PSD file until your image is finished and then you can save into the
format most appropriate for your project.
JPEG
JPEG, which stands for Joint Photographic Experts Group, is one of the most common and well
known file formats. JPEG files are good for web use as well as a variety of applications due to their
small file size. Due to compression JPEG images loss data (image quality) each time change the
file is saved.
GIF
GIF, or Graphics Interchange Format, is a popular file format for web use and other Internet
applications. These files are typically small in size and load quickly in Internet browsers. GIF files
are limited to a maximum of 256 colours.
TIFF
TIFF, or Tagged Image File Format, are high quality images but are not really used that often and
are not good for Internet use.
Although there are more file formats than we have listed here these are the formats you will want to
use in your Photoshop photo editing projects.
For the most part, the only formats you will use on a regular basis are PSD, JPEG, and GIF.
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