I often get requests to supply photos for online publication or a contest where the editor specifies the dpi or “dots per inch.” It’s usually a certain number of pixels wide “at 300 dpi” or “72 dpi,” or sometimes all they ask for is “a 300 dpi image.”
But I’m here to tell you that those are nonsensical specs. Setting an image’s dpi* for online or screen viewing is literally meaningless.
Why? Because the image’s dpi is 100% determined by the screen it’s seen on. And nothing I do, no dpi setting, can change that. Continue reading