I keep seeing posts where people talk about file sizes, and they mention saving the image at 72 ppi. I have always thought that the file size was determined by the number of pixels in the image, and had nothing to do with the resolution. Am I missing something? Since this came up before (but never agreed or disagreed on), I opened Photoshop, and made a new image 288 pixels X 360 pixels. I painted a smiley on it, then saved it at 72 ppi, as jpg at the best quality. I then changed the reslolution to 1200 ppi, but I kept the pixel size the same. This was saved as before, with the only difference being the resolution (and file name). File sizes in Photoshop, and as seen in Windows Explorer confirmed that the two images were identical in size . Is there actually a reason to save the file at a lower resolution? It is my understanding that the image will display the same size on a monitor regardless of the Photoshop image resolution, as long as the pixel size remained the same. If I'm wrong in my thinking, please clear this up for me. It drives me nuts every time I see a discussion on it, and it leaves me wondering where, or if, I'm wrong.
Ed
Ed
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