When the print and paper shapes differ, a print shop 'fit' typically fills all of the paper, fitting one dimension to leave no unfilled white space border in the other. The image 'shape' (which is width / height, called Aspect Ratio) likely rarely matches the paper 'shape', which always needs attention first. Images have both size and shape properties. But it will not necessarily fit the paper 'shape', which requires cropping attention done by you.

This scaling will print at a new dpi which will fit the paper size. This can be borderless if so specified in the printer Properties. However, most photo editors will also provide an option to 'Scale to fit media' or 'Best fit to page', which will scale the image to fit the specified paper size (similar to the labs above). Hopefully, you have already properly scaled the image for your selected paper size. The dpi number that your digital camera initially stores in the image file is far from meaningful, it is just some arbitrary number, which will print SOME size, but not likely to be your own printing goal. For example, if an image dimension is 3000 pixels, then specifying that file number as 300 dpi printing resolution will print it to be 3000/300 = 10 inches print size (even if the paper is 4圆). But it typically will also allow changing that dpi, called scaling (to fit the paper size). If printing yourself at home, the Print menu in your photo editor normally does use the file's scaled image dpi number (pixels per inch) to size the images on paper (regardless if it matches the paper size at all).But if the provided image shape does not match the paper shape, the excess image outside the paper edges simply disappears, results may not be what you expected. Or, if too small (insufficient pixels provided), the print quality will be lower, and the lab may refuse worst cases. That's not necessarily a problem, except a far too-large image will be slow to upload. If your image dimensions are too large, the photo shop will first resample it to this smaller requested size. Planning ahead to avoid surprises by first cropping the image to match that paper shape, and also to provide enough pixels so that the result will be 250 to 300 pixels per inch will be a very good plan. If you order 8x10 inches, you will get 8x10 print size. They will ignore your dpi number already in the image file, and will recompute their own necessary 'pixels per inch' value, to scale your image to their paper size. The photo printing shops where we order prints will offer a paper size, and will fill that paper with your image.There are two situations when printing images, depending on if print shops or home printing. Number of Pixels = Size in Inches ∗ PPI = 376.57 PPI.The dpi calculator is below, but first, some background concerns. The following formula gives the number of pixels, horizontally or vertically, given the physical size of a format and the pixels per inch of the output: Since most digital hardware devices use dots or pixels, the size of the media (in inches) and the number of pixels (or dots) are directly related by the 'pixels per inch'. Considered in another way, a pixel has no inherent size or unit (a pixel is actually a sample), but when it is printed, displayed, or scanned, then the pixel has both a physical size (dimension) and a pixel density (ppi). Note that pixel density is not the same as resolution - where the former describes the amount of detail on a physical surface or device, the latter describes the amount of pixel information regardless of its scale. Horizontal and vertical density are usually the same, as most devices have square pixels, but differ on devices that have non-square pixels. Pixels per inch ( ppi) and pixels per centimetre ( ppcm or pixels/cm) are measurements of the pixel density of an electronic image device, such as a computer monitor or television display, or image digitizing device such as a camera or image scanner. Screen resolution measured in pixels per length

Pixels resolution calculator