This GIMP (GNU) tutorial demonstrates how to create a Contrasting Border Frame. To work along, you are welcome to download the Start Image I am working with Here. Unzip the file and open the image onto GIMP’s workspace.
You can quickly Undo a step at any time by pressing Ctrl then Z. Alternatively, click a previous Undo History snapshot - Windows then Dockable Dialogues then click Undo History. In addition, to Zoom in (or Zoom out) of your image; from the top menu choose View then select a Zoom Tool from the subsequent drop-down list.
Utilise The Scale Tool
Launch GIMP & Organise Its Workspace & Palettes
Open your choice of Start Image onto GIMP’s workspace - File then Open - Ctrl then O.
Ensure the Layers and the Undo History Palettes are visible, and then drag them into position over your workspace - (Windows then Dockable Dialogues - then click Layers and Undo History).
Now, Duplicate the Background Layer by clicking the following Create a duplicate... tab.
Then from the left-side Toolbox, activate the Scale Tool.
And working on the Background Copy Layer, left-click over your image.
Left-clicking surrounds your image with a Scale Bounding Box, as illustrated below.
Scale Tool For Beginners
You are looking to reduce the Duplicated Copy Image’s Size by 75%. Therefore, click open and change the following Scale setting to Percent.
Then clear the Width and Height values and type in 75.00. Then complete the resize by clicking the Scale tab.
4/ Alignment Tool
Now, from the left-side Toolbox, activate the Alignment Tool.
Then left-click over your image.
And from the left-side Options Box, click the following Align centre of target tab.
Then click the following Align middle of target tab.
The Background Copy Image will now be centralised - as illustrated below.
Drop Shadow Note
If you like, apply a Drop Shadow to your the Background Copy Layer, as Demonstrated in my Tutorial Here. (Top menu, then Filters then Light and Shadow then Drop Shadow).
Now, activate the Background Layer.
And then apply a contrasting Filter of your choice to it. For example, to remove the Background Layer’s Colour, from the top menu, choose Colours and then choose Desaturate.
It’s a good idea to preserve your Layers by saving your image as a XCF File.
To finish, from the top menu, choose Image and then choose Flatten Image.
Your image will benefit from a Sharpening Filter. From the top menu, choose Filters then choose Enhance then choose Unsharp Mask. And from the subsequent Unsharp Mask dialogue box, enter the following settings, and then click OK.
Sharpen Images Tutorial
Congratulations, your Contrasting Border Frame Conversion is complete, and it is ready to save - top menu, then File then Save As.
Wendi E. M. Scarth. Top of Page.