Each pixel is assigned a specific location and color value. Bitmaps can lose detail and appear jagged if highly magnified on-screen or printed at too low a resolution. In the resulting dialogue box, type in the desired dimensions in the Print Size boxes. To produce high-quality images using Photoshop, it is important to understand how the pixel data of bitmap images is measured and displayed. Vector images are made of lines and curves defined by mathematical objects called vectors.
Vectors describe graphics according to their geometric characteristics.
You can move, resize, or change the color of a vector image without losing the quality of the graphic. The specific format in which an image file is saved. Every format has its own characteristics, advantages and disadvantages. Brief descriptions of a number of formats are below the table. Adobe PostScript-based format which supports vector objects, raster images, and formatted text.