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Using Bill Platt’s “Coloring Books for Adults”,  I set myself the challenge to create 30 designs for an adult coloring book, and publish it in 30 days using (CS).

How am I doing?

Getting there slowly.

Image Resolution.

The designs were going to be done in one go, so I decided to check how CS want the designs. I know some people who have had messages saying images need to be around 300 dpi so I wanted to check.

Found it in the Interior Reviewer Guide under Image Quality, Low Resolution Images:

“All digital images have a “resolution,” which is a measurement of the amount of detail an image has. The higher the resolution, the more detailed and clear the (image) will be.. For an image to be high-resolution, it is generally considered to have 300 or more dots per inch (DPI) when the image’s dimensions are at the size at which you want it displayed…”

So glad I found that!

Finding image resolution in Windows Explorer. 

Right-click on image. Dropdown menu appears.

Go to the bottom to Properties. Left-click to open.

Four tabs – General, Security, Details, Previous Versions.

Open Details. Go to Image.

For the purposes of this, the fields you want are Dimensions and resolution.

The mandala I did has Dimensions 800 x 800 (that’s pixels) and  resolution 72 dpi.

CS want Dimensions 2400 x 2400 pixels (px) and resolution 300 dpi.

How to Make Your Adult Coloring Designs Ready to Publish.

I use two free programs, Inkscape and Gimp.

  1. Open Inkscape and Gimp
  2. Choose your design
  3. In Inkscape – File, Open, <yourfilename>. Click Open
  4. jpeg bitmap image report box will open. Click OK.
  5. File, Save As
  6. A window will open with <yourfilename> and Save as type: Inkscape SVG (*.svg). Click Save.
  7. Inkscape window will open with your design in and <yourfilename.svg> at the top
  8. Check the folder <yourfilename> came from. There’ll be a .svg file where the Inkscape logo is and it’ll have <yourfilename> below.
  9. In Gimp – File, Open, find <yourfilename.svg> in the dropdown list and click on it. <Yourfilename.svg> will display in the right sidebar.
  10. Click Open.
  11. A new window will open, Render Scalable Vector Graphics.
  12. The top two boxes are Width and Height. Highlight and overtype the width and height you want. You can change the unit of measurement.
  13. Ignore the next two boxes.
  14. The next box is Resolution. Highlight the number and overtype the dpi you want. If you’re printing or publishing, you need at least 300.
  15. Click OK.
  16. File, Export.
  17. An Export Image window will open. <yourfilename.svg> will be in the top field. Change .svg to .jpg.
  18. got to bottom right corner above Save. There’s a box, “All export images”. Click the dropdown menu and click JPEG.
  19. Click Export.
  20. A box will pop up telling you “A file named “yourfilename.jpg” already exists. Do you want to replace it?” Click Replace.
  21. A box called Export Image as JPEG will appear with Quality and a slide beside it with a number the other side. Move the slide until the number is 100 then click Export. <yourfilename.jpg> will go back to the folder you got it from.
  22. Find <yourfilename.jpg> in the folder it exported to. Check Properties, Details to make sure the dimensions and dpi are correct.

That’s all there is to making your adult coloring designs ready to publish.

Check Your Designs.

You know how to do it with free software. Let us know if you have any difficulty.







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