GIMP

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The GIMP is the GNU Image Manipulation Program. it is a featureful graphics editor, which is often called "The Photoshop of Linux". Despite its reputation in the GNU/Linux world, it is cross-platform, and works well on Windows too. It is mainly intended for photo editing, but is also good for pixel art.

Download[edit]

Documentation[edit]

Specific applications[edit]

  • Tweaking the master palette. Most of the items in the Colors menu will help.
    • Remember, you can apply them not only on the entire palette at once, but by using the rectangle select tool, it's easy to apply them to just one ramp or part of a ramp.
    • You can also reduce the strength of an effect after applying it, using the 'Edit->Fade' menu item and adjusting the opacity slider.
    • Hue-Saturation and Color Balance can be used to alter the overall mood of the palette. If you have the GMIC plugin installed, it also provides a wide range of other color alterations in its Colors section.
    • Brightness-Contrast: self explanatory, hopefully.
    • Levels and Curves: These are the most flexible. Recommended. Remember you can alter the levels or curves individually for each channel(R, G, B) to achieve a color alteration effect; This is mutually exclusive with the 'value' option, though, which is more suited to adjusting overall contrast and brightness. So set the 'value' curve/levels first if you want to set it -- it will automatically propagate to the individual R,G,B curves/levels which you can then tweak.
  • Selecting palette colors to draw with, with the keyboard:
    • If you have not done so already:
      • Bring up the Keyboard Shortcuts dialog in the preferences.
      • Open the Context section
      • Find 'Foreground Swatch Color Next' and 'Foreground Swatch Color Prev' actions in the Context section
      • Assign them each a keyboard shortcut
    • Use these shortcuts to move through the current image's palette (or the currently selected palette in GIMP, if the image does not have a palette)
  • Repeat instances of an image part
    • Select the region, eg. with Rectangle tool
    • Edit->Copy
    • Activate Pencil tool
    • Select the brush named 'Clipboard Brush'
    • Paint
  • Rearrange 16 color palette of current image, without altering appearance of image
    • Open Colormap dialog (Windows->Dockable Dialogs->Colormap)
    • Rightclick and select 'Rearrange Colormap'
    • Drag colors to rearrange

See Also[edit]