1, ps: It mainly deals with digital images composed of pixels, and effectively edits and creates pictures with its numerous editing and drawing tools. Ps has many functions, involving images, graphics, text, video, publishing and so on. It is most suitable for designing class flags.

2.cdr: It is the source file storage format of graphic design software CorelDraw, and it is a vector graphic file. Similarly, cdr files can also be opened with CorelDraw software. This graphic tool provides designers with many functions, such as vector animation, page design, website production, bitmap editing, webpage animation and so on. It is a vector graphic design and typesetting software mainly for graphic designers and printers.