Low Res Images Photoshop

Brief Description

Image Resolution is best understood as a rectangular grid of picture elements (pixels). Resolution is traditionally set in pixels per inch (ppi) also know as dots per inch (dpi). The resolution setting maps an image’s pixel dimensions to its physical size. With a pixel dimension of 600 x 600 and a resolution of 300 DPI, the image has a physical size of 2” x2”.

The resolution setting is crucial when you want to print. A 1600 pixel x 1200 pixel image printed at 72 ppi, for example, would output at over 22” x 16”. However, at 300 ppi, that same image would output at 5.33” x 4”, or about the same size as a postcard.

For an image to print properly, the image should be saved at 300 ppi at the final printed size.

Never increase the total pixel dimension of raster image. For example, if you have an image that is 400 x 600 pixels at 100 ppi, and you increase it to 1200 x 1800 pixels by changing from 100 ppi to 300 ppi, the printed image will be fuzzy.

What your issue is

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Need to turn low res web image to higher res print ready image

How to fix this issue

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You can sort of manually do that in Photoshop just by changing the dpi from 72 to 300+. Or use Genuine Fractals and so on.

More details

A low resolution file MUST NEVER be resampled to 300dpi. Files that are configured as 72 dpi but have the proper pixel dimensions can be resized.

Resampling Image for 300 dpi.

Make note of the width and height of your image in pixels (pixel dimension) Unclick on the "Resample Image" box. This will not allow the Pixel Dimensions to change

Change the value of the resolution field to 300 pixels/inch





References:

Resolution