These Adobe Illustrator and editable PDF maps offer several advantages over simple graphic images - most important of which is that our maps are scalable to virtually any size without loss in detail or quality, thanks to their vector nature. PDF versions of our blank state maps can be opened using the free Adobe Reader software and are designed for use in a wide array of software applications, such as Microsoft PowerPoint and Word. PDF versions of our blank maps are also editable in Adobe Illustrator 10 or higher. Because each of our digital maps is available in the Adobe Illustrator or editable PDF format, both of which use a vector based approach to displaying images, you can easily zoom into any portion of our maps without any degradation in the quality of the text, lines and symbols of the map --- regardless of the magnification factor. Using Adobe Illustrator, you can then easily crop portions of your map, add custom symbols, and change colors and font attributes as you need. Source.