PSD to JPG converter

.psd

Adobe Photoshop

PSD – is an image file format created by Adobe for Graphic Designers to create layered images. With this format, a wide range of data from "Photoshop" is available, including texts, graphic layers, or notes. The extension can support multiple shades of gray, monochrome images, as well as CMYK and RGB color models. Such files can be converted to various formats (JEPG, PNG, and others) for subsequent transfer or storage. After changing the format, all the layers are transformed into one, which does not happen when saving with the PSD extension. In this case, they are available for viewing and editing, making them especially useful for working with drafts of various documents. The format is irreplaceable when saving the intermediate results. It is supported by most versions of Photoshop, as well as other Adobe programs.

The PSD extension is characterized by the ability to support various visualization options, including a mask, spot colors, two-color settings, clipping. There are files with the .psb extension in some cases, which support a resolution limit of 30 thousand pixels in width and height. PSD files use the RLE compression algorithm, which allows compressing with minimal loss. However, they are still large, so it is better to use archivers for storing them on disk.

Adobe Systems

.jpg

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.

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 format acts simultaneously as the standard of ISO and the International Telecommunication Union. The file compression ratio is in the range from 10:1 to 100:1. In this case, the reduction in image quality can vary from insignificant to substantial.

The JPEG Committee