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What file types
does Photoshop recognize?
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Photoshop
can recognize many different image formats. Some of the formats and their
file extensions are:
- Photoshop
Format: PSD files are Photoshop specific. Since they preserve
layer and channel information, users can continually edit and adjust
images using the PSD file.
- CompuServe
Graphic Interchange Format: GIF files are most commonly used
for Web-based line art such as logos and buttons. Since this format
can only support a maximum of 256 colors, GIFs are also popular for
images that have only a few colors.
- Joint
Photographic Experts Group: JPEG files support full color palettes;
therefore, when saving photographic images to use on the Web, the best
format is JPEG. A word of caution when using JPEG format: Every time
a JPEG file is closed, the file recompresses; therefore, editing and
adjusting should be done using the PSD file so image quality is not
lost with multiple recompressions.
- Bitmap:
BMP files
- Tagged
Image File Format: TIFF files
- Portable
Networks Graphic: PNG files are a relatively recent graphic format,
designed for use on the web. However, not all web browsers recognize
PNG files, so be aware of this if you are creating graphics for use
on the web.
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How do I open images
that are stored in various formats?
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To open a
graphic that is not stored in Photoshop format (.psd), pull down the File
menu and select Open.
The "Open"
dialog window will appear.
Make
sure that the "Files of type:" field reads "All Formats."
If it does not, click on the down arrow to the right of the field and
choose "All Formats" from the drop down list.
With
All Formats selected, all image files in the selected directory that Photoshop
can read will be displayed.
Select the
desired file by clicking on it, then click Open to display the
graphic in the Photoshop work area.
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