Finished Artwork/Image Resizing for Low Resolution

Image Resizing for Low Resolution

There are good reasons to make a low resolution copy of your finished artwork. For instance, small files are much easier to send and receive. But more importantly, a low-resolution image can be a deterrent to an unethical Internet thief who wants to appropriate your artwork as their own, and use it on prints, mugs, and t-shirts to make money at your expense.

Adding a copyright symbol or name to your copy of your Finished Artwork doesn’t work as well as you think it might. It is fairly easy to remove it in PhotoShop and you wouldn’t know it was ever there.

However, prints, mugs, and t-shirt companies all require an image with a minimum of 200 dpi, preferably 300 dpi. If your image is 72 dpi to 150 dpi, it will be unusable for them. But it will be very good for viewing on your website, Facebook, Instagram, and wherever else you want it to appear.

Here is an image of Hunter at 150 dpi, 4 inches x 4 inches. If you zoom in, it is still pretty sharp.

Screen Shot 2017-09-08 at 12.42.50 PM

It is nice and clear for viewing on a monitor, but inadequate for printing, etc.

Screen Shot 2017-09-08 at 12.50.19 PM

I took my high resolution image and did this, in this order:

  1. I changed the resolution from 300 dpi to 150 dpi
  2. I changed inches to pixels
  3. I changed the width to 600 pixels, which is about 4 inches wide

You could also change it to 72 dpi if you want, but it wouldn’t be as good.


You are working with your finished high resolution image here. I will save it as HunterLR.jpg so I know it is my low resolution copy for posting on the web. If you simply hit “Save” here, it will overwrite your high resolution image and you will have to start all over.

When an image is downsized, it cannot be improved to 300 dpi again.





Finished Artwork/Image Resizing for High Resolution

Navigate to the top menu, and choose “Image,” then “Image Size.”


You will get this box:

Screen Shot 2017-09-08 at 11.53.53 AM

This picture was taken by my Nikon camera and I have it set for 300 dpi. Usually if you take a picture with your iPhone, the settings are for 72 dpi and pretty large so you can increase the dpi, which also means decreasing the size by the same factor.

So I know that it is a very large file, over 20 Mg. You definitely don’t want to leave it this size if you plan to email it or use it on Internet sites. It is an excellent size to save as a high resolution file to send to a magazine, or have reprints made. I will save this file as HunterHR.jpg.

If your image is 72 dpi, you will want to resize it to make it high resolution.

Screen Shot 2017-09-08 at 12.11.40 PM

This step needs to be done in a particular order.

  1. Change resolution to 300, which is roughly 4 x 72.
  2. Divide width by 4, and enter 8.5 or 9
  3. The Height will automatically adjust to the change

Now you have a high resolution image, so save it with this designation and you won’t have to keep checking what size it is.

Finished Artwork/Brightness & Contrast



It’s time to adjust the values. I intentionally do not adjust color balance because I want this to look as close to my original painting as possible.


Go to “Image” on the top menu, then “Adjustments,” then “Brightness/Contrast”

Screen Shot 2017-09-08 at 11.44.40 AM

I move the brightness until I see black in the darkest part of the painting, which is the inside of the ears. Then I adjust contrast for the blacks as well. Click OK. Compare it with your original by using the History palette and returning to where you opened your picture. If you aren’t satisfied, try again and use either Undo or the History palette until you are happy with it.