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GIMP TutorialsChanging color of black text over white background in GIMP (Showcase | Slideshow)

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tim

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Changing color of black text over white background in GIMP

Post#1 by tim » 02 Oct 2016, 05:51


For this how to, we'll use a screen capture http://lipsum.com/ which has black text over white background.
1. Open image in GIMP.
changing_color_of_black_text_over_white_background_01.png
changing_color_of_black_text_over_white_background_01.png # (65.94 KiB) Viewed 1289 times (Watermarked | Thumbnail)
2. Use "Rectangle Select Tool" (or other selection tools) to select the text we want to change color. While using the select tools, too select multiple areas hold down the Shift key (on Windows) to select additional area(s).
changing_color_of_black_text_over_white_background_02_select_area.png
changing_color_of_black_text_over_white_background_02_select_area.png # (69.48 KiB) Viewed 1289 times (Watermarked | Thumbnail)
3. Right click the layer in Layers window and select "New Layer"
changing_color_of_black_text_over_white_background_03_new_layer.png
changing_color_of_black_text_over_white_background_03_new_layer.png # (21.23 KiB) Viewed 1289 times (Watermarked | Thumbnail)
4. Select "Transparency" and click "OK" to create New Layer.
changing_color_of_black_text_over_white_background_04_layer_transparency.png
changing_color_of_black_text_over_white_background_04_layer_transparency.png # (13.34 KiB) Viewed 1289 times (Watermarked | Thumbnail)
5. Click on foreground color to change it to desired color (here we're gonna change it to blue).
changing_color_of_black_text_over_white_background_05_change_color.png
changing_color_of_black_text_over_white_background_05_change_color.png # (36.52 KiB) Viewed 1289 times (Watermarked | Thumbnail)
6. Click and drag the foreground color onto image, and it'll fill the selected area with that color on our New Layer.
changing_color_of_black_text_over_white_background_06_drag_color_onto_image.png
changing_color_of_black_text_over_white_background_06_drag_color_onto_image.png # (171.2 KiB) Viewed 1289 times (Watermarked | Thumbnail)
7. Under Layers window, click "Mode" and select "Addition"
changing_color_of_black_text_over_white_background_07_change_mode_to_addition.png
changing_color_of_black_text_over_white_background_07_change_mode_to_addition.png # (13.12 KiB) Viewed 1289 times (Watermarked | Thumbnail)
8. And this is the result, the black text is changed to blue like we desired.
changing_color_of_black_text_over_white_background_08_result.png
changing_color_of_black_text_over_white_background_08_result.png # (67.52 KiB) Viewed 1289 times (Watermarked | Thumbnail)
9. Now, you can go to File->Export As (on Windows) to export your output to an image in desired format.
changing_color_of_black_text_over_white_background_09_exported.png
changing_color_of_black_text_over_white_background_09_exported.png # (64.97 KiB) Viewed 1289 times (Watermarked | Thumbnail)
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Post#2 by Pat625 » 30 Nov 2016, 07:43


:learned_something: I really like that, and did not know it was possible. Thanks, Tin!
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Post#3 by RJKD » 30 Nov 2016, 10:34


Great little tip, thank you T
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Post#4 by runSPOTrun13 » 30 Nov 2016, 14:21


Definitely easier than the way I was doing it, thanx!
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Post#5 by Issabella » 24 Jan 2017, 14:50


Thank you so much Tin, It's a very nice clever idea and very useful, too. :learned_something: :thumbsup:
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Post#6 by tim » 24 Jan 2017, 17:36


Issabella wrote:Thank you so much Tin, It's a very nice clever idea and very useful, too. :learned_something: :thumbsup:
Thanks Issabella,
I wished I thought of this method before and showed it to this guy that emailed me and wanted to know how to change black text color over white to something else.
Back then I didn't know this method and so i showed him to use select color and selected black but it's not as good as this method because some pixels around black are actually grayish so not get selected.
Using this method for this over white special case is really good because you don't have to worry about having to select black and change threshold to something just addition and it takes care of all the grayish pixels as well.
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