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  2. Help : How to reduce colors for saving a JPEG as PNG

    en.wikipedia.org/wiki/Help:How_to_reduce_colors...

    Then either grow the selection by one or two pixels (using the Selection menu) or select the main color and invert the selection. The idea is to select both the newly transparent portions and the fringe around the foreground color. Use the color to alpha tool with the background color to remove the fringe. Now cancel the selection, go to the ...

  3. Wikipedia:Historical archive/How to draw a diagram with ...

    en.wikipedia.org/wiki/Wikipedia:Historical...

    It’s better not to use annotation to give a diagram a title. Put the diagram inside a table and use the table caption to do it. That way it can easily be changed. Do not be tempted to use the WordArt button next to the text button. WordArt is the feature most responsible for those terrible looking amateur posters, and ads that can be seen in ...

  4. Color picker - Wikipedia

    en.wikipedia.org/wiki/Color_picker

    A screenshot of the GTK+ 2 color picker. A screenshot of the Qt color picker. GIMP color picker.. A color picker (also color chooser or color tool) is a graphical user interface widget, usually found within graphics software or online, used to select colors and, in some cases, to create color schemes (the color picker might be more sophisticated than the palette included with the program).

  5. Comparison of color models in computer graphics - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_color_models...

    A color wheel is a tool that provides a visual representation of the relationships between all possible hues. The primary colors are arranged around a circle at equal (120 degree) intervals. (Warning: Color wheels frequently depict "Painter's Colors" primary colors, which leads to a different set of hues than additive colors.)

  6. GIMP - Wikipedia

    en.wikipedia.org/wiki/GIMP

    There are many tools that can be used for editing images in GIMP. The more common tools include a paint brush, pencil, airbrush, eraser and ink tools used to create new or blended pixels. The Bucket Fill tool can be used to fill a selection with a color or pattern. The Blend tool can be used to fill a selection with a color gradient.

  7. XCF (file format) - Wikipedia

    en.wikipedia.org/wiki/XCF_(file_format)

    XCF, short for eXperimental Computing Facility, [1] is the native image format of the GIMP image-editing program. It saves all of the data the program handles related to the image, including, among others, each layer, the current selection, channels, transparency, paths and guides.

  8. Blend modes - Wikipedia

    en.wikipedia.org/wiki/Blend_modes

    The Color Dodge blend mode divides the bottom layer by the inverted top layer. This lightens the bottom layer depending on the value of the top layer: the brighter the top layer, the more its color affects the bottom layer. Blending any color with white gives white. Blending with black does not change the image.

  9. Color balance - Wikipedia

    en.wikipedia.org/wiki/Color_balance

    Comparison of color versions (raw, natural, white balance) of Mount Sharp (Aeolis Mons) on Mars A white-balanced image of Mount Sharp (Aeolis Mons) on Mars. Most digital cameras have means to select color correction based on the type of scene lighting, using either manual lighting selection, automatic white balance, or custom white balance. [6]