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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...

    Sometimes, you find a drawing or similar image useful for a Wikipedia article, that was saved as a JPEG but should have been saved as a PNG.JPEG is good for images where the color changes fluidly throughout the image, like in a photograph, whereas PNG files are good for images with relatively few colors, such as a drawing of a flag, a chart, or a map; note that sometimes SVG is better.

  3. JPEG Network Graphics - Wikipedia

    en.wikipedia.org/wiki/JPEG_Network_Graphics

    JPEG Network Graphics (JNG, / ˈ dʒ ɪ ŋ /) is a JPEG-based graphics file format which is closely related to PNG: it uses the PNG file structure (with a different signature) as a container format to wrap JPEG-encoded image data. JNG was created as an adjunct to the MNG animation format, but may be used as a stand-alone format. JNG files embed ...

  4. PNG - Wikipedia

    en.wikipedia.org/wiki/PNG

    The JPEG (Joint Photographic Experts Group) format can produce a smaller file than PNG for photographic (and photo-like) images, since JPEG uses a lossy encoding method specifically designed for photographic image data, which is typically dominated by soft, low-contrast transitions, and an amount of noise or similar irregular structures.

  5. Python Imaging Library - Wikipedia

    en.wikipedia.org/wiki/Python_Imaging_Library

    Python Imaging Library is a free and open-source additional library for the Python programming language that adds support for opening, manipulating, and saving many different image file formats. It is available for Windows , Mac OS X and Linux .

  6. Wikipedia:Uploading images - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Uploading_images

    Please name your files descriptively to avoid confusion (see below). To include the image in an article, use a link in the form [[File:filename.jpg]] or [[File:filename.png|alt text]] or [[File:filename.ogg]] for sounds. To include an image as a thumbnail, use [[File:filename.jpg|thumb|Caption]].

  7. ImageJ - Wikipedia

    en.wikipedia.org/wiki/ImageJ

    It can read many image file formats, including TIFF, PNG, GIF, JPEG, BMP, DICOM, and FITS, as well as raw formats. ImageJ supports image stacks, a series of images that share a single window, and it is multithreaded, so time-consuming operations can be performed in parallel on multi-CPU hardware. ImageJ can calculate area and pixel value ...

  8. Image file format - Wikipedia

    en.wikipedia.org/wiki/Image_file_format

    An image file format is a file format for a digital image. There are many formats that can be used, such as JPEG, PNG, and GIF. Most formats up until 2022 were for storing 2D images, not 3D ones. The data stored in an image file format may be compressed or uncompressed.

  9. Comparison of graphics file formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_graphics...

    PNG.png image/png Gecko 1.9 and Opera: Yes Apple Icon Image: Apple Inc..icns macOS: ART: AOL.art ASCII art.txt, .ansi, .text text/vnd.ascii-art Supported by GIMP: AutoCAD DXF: Drawing Interchange Format Autodesk.dxf image/vnd.dxf ARW: Sony Alpha RAW Sony: TIFF .arw AVIF: AV1 Image File Format Alliance for Open Media (AOMedia) AV1.avif image ...

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