What is Adobe Photoshop ? Unknown 12:13 Adobe Photoshop is a raster graphics editor developed. Photoshop was created in 1988 by Thomas and John Knoll. Photoshop files have default file extension as .PSD, which stands for "Photoshop Document." A PSD file stores an image with support for most imaging options available in Photoshop. Share this Share on FacebookTweet on TwitterPlus on Google+
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