82 lines
3.4 KiB
Text
82 lines
3.4 KiB
Text
Tux Paint
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versión 0.9.28
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PNG Documentation
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Copyright © 2007-2021 by various contributors; see AUTHORS.
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http://www.tuxpaint.org/
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marzo 9, 2021
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About PNGs
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PNG is the Portable Network Graphic format. It is an open standard, not
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burdened by patents (like GIFs). It is a highly compressed format (though
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not "lossy" like JPEGs - lossiness allows files to be much smaller, but
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introduces 'mistakes' in the image when saved), and supports 24-bit color
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(16.7 million colors) as well as a full "alpha channel" - that is, each
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pixel can have a varying degree of transparency.
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For more information, visit: http://www.libpng.org/
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These features (openness, losslessness, compression, transparency/alpha)
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make it the best choice for Tux Paint. (Tux Paint's support for the PNG
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format comes from the Open Source SDL_Image library, which in turn gets it
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from the libPNG library.)
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Support for many colors allows photo-quality "rubber stamp" images to be
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used in Tux Paint, and alpha transparency allows for high-quality brushes.
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How To Make PNGs
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The following is a very brief list of ways to create PNGs or convert
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existing images into PNGs.
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GIMP & Krita
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Excellent tools with which to create PNG images for use in Tux Paint are
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GIMP and Krita, both high-quality Open Source interactive drawing and
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photo editing programs.
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It is likely that one or both are already installed on your system. If
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not, they should be readily available from your Linux distribution's
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software repository. If not, or to learn more, visit http://www.gimp.org/
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and http://www.krita.org/, respectively.
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Command-line Tools
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NetPBM
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The Portable Bitmap tools (collectively known as "NetPBM") is a collection
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of Open Source command-line tools which convert to and from various
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formats, including GIF, TIFF, BMP, PNG, and many more.
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It is possible that it's already installed on your system. If not, they it
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be readily available from your Linux distribution's software repository.
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If not, or to learn more, visit http://netpbm.sourceforge.net/.
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cjpeg/djpeg
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The "cjpeg" and "djpeg" command-line programs convert between the NetPBM
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Portable Any Map (PNM) format and JPEGs. It is possible that it's already
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installed on your system. If not, they it be readily available from your
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Linux distribution's software repository. If not, or to learn more, visit
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https://jpegclub.org/.
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Windows Users
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* CorelDRAW (Corel) — http://www.corel.com/
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* Illustrator (Adobe) — http://www.adobe.com/products/illustrator.html
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* Paint Shop Pro (Corel) — https://www.paintshoppro.com/
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* Photoshop (Adobe) — http://www.adobe.com/products/photoshop.html
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* PIXresizer (Bluefive software) —
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http://bluefive.pair.com/pixresizer.htm
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Macintosh Users
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* CorelDRAW (Corel) — http://www.corel.com/
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* GraphicConverter (Lemke Software) —
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https://www.lemkesoft.de/mac-fotobearbeitung-mac-diashow-mac-grafikprogramm-mac-bildbetrachter/
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* Illustrator (Adobe) — http://www.adobe.com/products/illustrator.html
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* Photoshop (Adobe) — http://www.adobe.com/products/photoshop.html
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