A PSD file is a raster image saved in the native format of Adobe Photoshop. The format was developed specifically for Photoshop and is usually used to store and transmit intermediate results when working with graphics, for example, website layouts or design projects. The PSD format uses graphics compression without losing its quality and allows you to store all image data in a single file: properties, layers, channels, masks, filters, effects, text, vector elements, etc. The format supports various color modes: RGB, CMYK, grayscale, monochrome, indexed color, and others. To view the PSD file, you can use both Adobe Photoshop and other graphic editors, including Adobe Illustrator, Adobe InDesign, CorelDRAW Graphics Suite, GIMP, ACDSee Photo Studio. A PSD file can be converted to one of the common graphic formats, for example, JPG or PNG for viewing in any graphics program.
PNG is one of the popular formats in web graphics. It was proposed in 1995 at the Usenet conference as a free alternative to licensed GIF. Since October 1, 1996, it exists as a full-fledged graphic format supported by all browsers and graphic editors.PNG is one of the most popular formats due to its good compression without loss of quality, fast loading, transparency function, clear image borders. In practice, .png is ideal for saving images with a small number of colors, as well as graphics with transparent areas. Logos, icons, badges, diagrams, scanned copies of documents are usually placed on sites just in .png format