File extension. File category. JPG — is a popular graphic format characterized by a high image compression rate, which leads to a decrease in image quality. It uses the technology of encoding smooth color renditions, providing the ability to frequently reduce the amount of data during the image's recording. Because of the small size, it is requested by the owners of websites, allowing you to save the traffic effectively.
It is also frequently used in memory cards of digital video cameras. The JPG algorithm is optimally suitable for compressing photographs and pictures in which realistic scenes with little contrast of colors are present.
It is not recommended to use this format for compression of drawings and various kinds of graphics. A strong contrast between several near located pixels provokes the appearance of visible artifacts.
Technical details. The procedure for compressing the digital images in JPG format is carried out in several stages. First, the photo is transformed into a color space YCbCr, and then it is divided into squares to determine the upper range of the color spectrum. Finally, the colors and brightness are coded. JPEG uses a "lossy" compression system and discrete cosine transform technology. The file compression ratio is in the range from to In this case, the reduction in image quality can vary from insignificant to substantial.
MIME type. Additional information Published by Johnny Westlake. Published by Johnny Westlake. Copyright C J. Developed by J. Approximate size Age rating For all ages.
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How you found the violation and any other useful info. Mit einem Experten sprechen. User Ratings 4. User Reviews Filter Reviews: All. Thanks for a great program under a free open source license! Excellent app. Really less time and space consuming process for conversion of images Thank you Unuseable and can't be salvaged in PhotoShop.
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