JPEG uses a 'lossy' compression system and discrete cosine transform technology. Finally, the colors and brightness are coded. Then it is divided into squares to determine the upper range of the color spectrum.

First, the photo is transformed into a color space YCbCr. 🔵 The procedure for compressing the digital images in JPEG format is carried out in several stages. It is not recommended to use this format to compress drawings and various graphics since a big difference between several near located pixels provokes visible artifacts. The JPEG algorithm is optimally suitable for compressing photographs and pictures in which realistic scenes with little contrast of colors are present. It is also frequently used in memory cards of digital video cameras. Because of the small size, it is requested by the owners of websites, allowing you to save the traffic effectively. It uses the technology of encoding smooth color renditions, providing the ability to reduce the amount of data frequently during the image recording. 🔵 JPEG – is a popular graphic file format, which is characterized by a high degree of compression, which leads to a decrease in image quality. 🔵 PNG Development Group (donated to W3C) Images are different in small weight with good quality. Most programs allow you to open such files. However, as a non-professional format, PNG can not display other color spaces. It supports 24-bit RGB colors, matching images, and shades of gray. The technology is limited to an 8-bit transparency channel so that you can adjust the colors from opaque to transparent. 🔵 The PNG extension was proposed as a tool that helps to transfer and store images on the World Wide Web. However, it does not allow us to save several pictures in one file at once, limiting its use in the development of animated images. The PNG technology ensures the preservation of all stages of editing and the restoration of the step by preserving the quality. PNG is based on the best features of the predecessor, including lossless compression and transparent background support. However, they are both raster image types. 🔵 PNG – is a scan-line graphic format developed as an alternative to GIF, a commercial license. 🔵 Microsoft Windows Photo Gallery Viewer

How to convert a file from png to jpg