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2. 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. If the data is compressed, it may be done so using lossy compression or ...

3. JPEG - Wikipedia

   en.wikipedia.org/wiki/JPEG

   JPEG. JPEG ( / ˈdʒeɪpɛɡ / JAY-peg, short for Joint Photographic Experts Group) [2] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality.

4. Lossy compression - Wikipedia

   en.wikipedia.org/wiki/Lossy_compression

   High-compression (low quality) JPEG. In information technology, lossy compression or irreversible compression is the class of data compression methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data size for storing, handling, and transmitting content.

5. JPEGmini - Wikipedia

   en.wikipedia.org/wiki/JPEGmini

   With the use of this technique, JPEGmini Pro may reduce JPEG picture quality by up to 80%, or 5 times, while minimizing visual imperfections in digital photos. Features. Image optimization: JPEGmini can significantly reduce the file size of JPEG images by up to 80% without compromising image quality. JPEGmini optimizes high-res photos, with a ...

6. Image compression - Wikipedia

   en.wikipedia.org/wiki/Image_compression

   JPEG was introduced by the Joint Photographic Experts Group (JPEG) in 1992. JPEG compresses images down to much smaller file sizes, and has become the most widely used image file format. JPEG was largely responsible for the wide proliferation of digital images and digital photos, with several billion JPEG images produced every day as of 2015.

7. Help:Pictures - Wikipedia

   en.wikipedia.org/wiki/Help:Pictures

   Since the MediaWiki software dynamically scales inline images there is no technical reason to reduce file size via scaling or quality reduction when uploading images, although non-free images may require scaling due to copyright concerns (consult the non-free image resolution guidelines). Also, compressing PNGs may be useful, because PNG files ...