Image file format: Difference between revisions

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== Image file compression ==
There are two main types of '''[[image file compression]]''' algorithms: [['''lossless]]''' and [['''lossy]]''' (Author, Year).
 
'''Lossless compression''' algorithms reduce file size<ref>{{Cite web |last=zaryab |first=zaryab |title=https://medium.com/@sark60362/how-to-compress-images-for-website-speed-28eb72ee174d |url=https://medium.com/@sark60362/how-to-compress-images-for-website-speed-28eb72ee174d |url-status=live |archive-url=https://medium.com/@sark60362/how-to-compress-images-for-website-speed-28eb72ee174d |access-date=Aug 23, 2025 |website=medium .com}}</ref> while preserving a perfect copy of the original uncompressed image. Although Losslesslossless compression generally, but not always, results in larger files than lossy compression., it Losslessis compressionpreferable shouldwhen berepeated usedediting tois required, as it prevents the accumulation of quality loss avoidfrom accumulatingmultiple stages of re-compression when(Author, editing imagesYear).
 
'''LossyIn contrast, lossy compression''' algorithms preservecreate a representation of the original uncompressed image that may appear identical to bethe auncompressed perfect copy,version but is not aan perfectexact copy. Often lossyLossy compression is often able to achieve smaller file sizes than lossless compressionmethods. MostMany lossy compression algorithms also allow for variableadjustable compression thatlevels, tradesenabling users to trade image quality for reduced file size (Author, Year).
 
== Major graphic file formats ==