GIMP - short for GNU Image Manipulation Program is a freely distributed image editor for such tasks as photo retouching, image composition and image authoring.
It is based on the GIMP Toolkit which was initially developed for The GIMP.
Brushes, colors, and painting toolsEdit
- 48 standard brushes, plus facilities to create new ones
- Brushes can be used in hard-edged, soft-edged, or eraser modes, be applied at different opacities, or used to apply various effects
- Palette with RGB, HSV, colour wheel, CMYK, and mixing modes, plus tools to pick colours from the image with various averaging options. Support for hexadecimal colour codes (as used in HTML).
Selection and masking toolsEdit
- Selection of rectangles, circles, similar colors, or freehand selection
- Smart Selection tool, known as the "Magic Wand", used to select contiguous regions
Layers and transparencyEdit
- Support for layers, including transparent layers, which can be shown, hidden, or made semitransparent
- Transparent and semitransparent images
- Channels available to add different types of opacity and color effects to images
- Support for paths containing line segments or bezier curves. Paths can be named, saved, and painted with brushes, patterns, or various line styles
- Intelligent Scissors (iScissors) tool can be used to auto-create paths between regions defined by strong color-changes
Effects, scripts and filtersEdit
- Approximately 150 standard effects and filters
As well as interactive use, GIMP can be automated with macro programs. The built-in Scheme can be used for this, or alternatively Perl, Python, Tcl and (experimentally) Ruby can also be used. This allows the writing of scripts and plugins for GIMP which can then be used interactively; it is also possible to produce images in completely non-interactive ways (for example generating images for a webpage on the fly using CGI scripts) and for batch color correction and conversion of images. For simple automatable tasks, a package such as ImageMagick is likely to be quicker, but GIMP has much more powerful features.
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