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'''How to Quickly Prepare And Resize Photos For Printing'''

Printed photos could be a great addition to your home interior, a way to preserve treasured memories, or an opportunity to present your work at an exhibition. Sometimes, you might need to change the size of an image before printing it. This is especially important when a picture is too big for a specific format, needs to be cropped to fit a particular aspect ratio, or is too small to look sharp and well-defined in an enlarged version.

1. '''Why am I printing?''' Pictures for personal collections don’t have to meet such high printing demands as visuals for photo exhibitions, for instance. For a private collection, you can choose a small format like 4x6 or 5x5. However, to print your visual for a marketing banner you might need to opt for 20x30 or bigger.<br>

3. '''What is the aspect ratio of the original photograph?''' Printing it in a different aspect ratio will affect how the picture looks. In some cases, the changes will be minor and insignificant. In others, poor quality and cropped out image parts could ruin it overall. If this happens, you must either print a photo in its original aspect ratio or change it before printing.

Knowing that numerous factors influence the way file sizes for print are calculated, it’s evident that there’s no one-fits-all approach. What will work for a standard 10x15 photo won’t be the best option for an A4 poster, and vice versa. Therefore, the more you know about image resolution and aspect ratio, the easier it will be to calculate the perfect file size for your specific need.

Raster images, such as photos and illustrations, consist of pixels—colored squares positioned in a certain way to form a picture. Image resolution is the density of the pixels. Low-resolution images have fewer pixels and, therefore, lose their quality when scaled manually. High-resolution images have at least 300 PPI (pixels per inch) and look good in large formats, e.g., billboard posters.

If you know a photo's dimensions in pixels, you can calculate its resolution when printed in a particular format. To do that, divide a picture's length (in pixels) by the chosen print size (in inches). The number you’ll get will be the resolution. If it’s 300 PPI or more, the printed version will look as clear and detailed as the source file.

[https://support.squarespace.com/hc/en-us/articles/115008538927-Understanding-aspect-ratios Aspect ratio] is the ratio of width and height that shows actual image proportions. The width is usually the first number, and the height is the second. When you have a visual with an aspect ratio of 16:9, it will maintain its proportions when printed in an aspect ratio of 32:18, for instance. However, if you try to use an original 9:9 image and fit it to 32:18, the result will be unsatisfactory, as the picture’s original proportions will be lost and it will look stretched.