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Compression of an image to reduce file size (in Kb) is usually "lossy" and is not advised for featured pictures. Image compression will reduce download times and save disk space, but it does so at the expense of fine detail and overall image quality. If in doubt, when saving JPEG files, always select the "maximum" quality setting.
Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission. Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior results compared with generic data compression methods which are used for other digital data.
It is also one of many supported compression algorithms in the .RVZ Wii and GameCube disc image file format. On 15 June 2020, Zstandard was implemented in version 6.3.8 of the zip file format with codec number 93, deprecating the previous codec number of 20 as it was implemented in version 6.3.7, released on 1 June.
Lossless compression – An image can be losslessly compressed, using the WebP Lossless Format. Metadata – An image may have metadata stored in EXIF or XMP formats. Transparency – An image may have transparency, i.e., an alpha channel. Color Profile – An image may have an embedded ICC profile as described by the International Color ...
The external links guideline recommends avoiding links to Facebook unless the profile is an official account, "controlled by the subject (organization or individual person) of the Wikipedia article" and when the links to Facebook "provide the reader with unique content and are not prominently linked from other official websites". Wikipedia is ...
Facebook is rolling out a new tool that lets it track the links users click on. The new system, called “link history”, is a catalogue of websites that people have visited within Facebook.
existence at the time of saving of linked internal pages; date and time of the last edit before saving; in the Image namespace (Image description pages): the image itself, the image history and the list of pages linking to the image; in the Category namespace: the lists of subcategories and pages in the category.
WebP is a raster graphics file format developed by Google intended as a replacement for JPEG, PNG, and GIF file formats. It supports both lossy and lossless compression, [8] as well as animation and alpha transparency.