PDF (Portable Document Format) is a versatile electronic document format. It was initiated by Adobe and was originally intended for electronic presentation of printed materials. Hence, the tasks of this format follow - storing information about the color scheme and the arrangement of elements, as well as ensuring identical output on different monitors and printers. PDF documents can be opened using the free version of Adobe Reader or a web plug-in that is available for most Internet browsers. In some browsers, in particular, in Google Chrome, this format is supported even without the plugin installed. You can edit PDF files using the paid version of Adobe Reader. Also, there are a huge number of programs for both opening and working with this format, and for converting to other formats.
Each task has its own image formats. There are many different formats that you will never even come across, especially if you are designing print products. Bitmaps are made up of pixels and can be expressed in anything from simple illustrations to complex images such as color photographs. Vector images are not really images, they are a kind of mathematical formulas that directly interact with the computer, telling it the coordinates of the shapes to be displayed. JPEG / JPG is the most widely used bitmap format online. It is commonly used to save photographs, email graphics, and large images such as banner ads. The same image in different formats can be of different size and quality.