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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.
WebP is an open image format released in 2010 that uses both lossless and lossy compression. It was designed by Google to reduce image file size to speed up web page loading: its principal purpose is to supersede JPEG as the primary format for photographs on the web. WebP is based on VP8's intra-frame coding and uses a container based on RIFF.
The Instant Previews feature of Google Search uses WebP internally to reduce disk space used by previews. [94] Android 4.0 supports encoding and decoding WebP images (via bitmap and Skia). [95] SDL_image supports the format since 1.2.11. Sumatra PDF supports WebP images for both standalone files and comic books since version 2.4. [96]
PDF: Portable Document Format Adobe Systems.pdf, .epdf application/pdf PEF: PENTAX RAW PENTAX TIFF .pef PGF: Progressive Graphics File xeraina GmbH .pgf Photographic images, eventual replacement for JPEG. Yes PGM: Portable Graymap File Format ASCII.pgm image/x-portable-graymap Yes PGML: Precision Graphics Markup Language Adobe Systems, IBM,
Digital generation loss induced by rotating a JPEG image 90 degrees (from top to bottom) 0, 100, 200, 500, 900, and 2000 times (without using lossless tools) Generation loss is the loss of quality between subsequent copies or transcodes of data. Anything that reduces the quality of the representation when copying, and would cause further ...
This is because uncompressed audio can only reduce file size by lowering bit rate or depth, whereas compressing audio can reduce size while maintaining bit rate and depth. This compression becomes a selective loss of the least significant data, rather than losing data across the board.