![]() These are intermediate formats that require specialized software to view/edit and converted when distributed beyond professional means (sans EPS). You may occasionally PSDs or EPS files, or photography formats like DNG or standard-free RAW, but those fall into the same category as video codecs like ProRez, DNxHD, Cineform. However, static images haven't had the wide range of codecs (most formats are lossless proprietary files used by various image editors) and have been almost entirely relegated to five formats, SVG, BMP, PNG, JPEG and GIF for distribution. Audio has had a similar vector from LMA4:1, Mpeg, MP2, Mp3, ACC, Ogg, AC3, DTS to name a few. This doesn't even cover the other formats, VP8, VP9, Ogg Vorbis, DIVX, 3IVX, Sorenson, Real Media and the many others that occurred the past 30 years which all have had variations of mainstream success. Each iteration with the ultimate goal of improving video quality with at lower bit rates. Over the years, codecs have improved remarkably, especially in the realm of video: For example: H.261 (1984, 1988) -> MPEG-1 (1988-1991) -> MPEG2 aka H.263 (1996-2015) ->MPEG4 aka H.264 (1999-current) -> High Efficiency Video Coding (HEVC) aka H.265 or MPEG (2015 - current). I recently decided to finally try out Squash by Realmac Software. I tend to be a little obsessive, using modern formats (WebP, JPEG 2000) and testing out avant-garde projects like Guetzli by Google. ![]() For years I've leaned on ImageOptim as my go-to for image optimization.
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