| A | B |
|---|
| Bitmap Image | An electronic file that represents an image as a grid of dots and specifies the color of each dot |
| Vector Graphic | An electronic file that describes a graphic using geometric shapes |
| JPEG | An image format optimized for images that contain many colors, such as photographs |
| GIF | An image format that works best for art containing limited numbers of color and areas wth defined borders between areas |
| PNG | A graphic format originally designed as an alternative to GIF that also supports an alpha channel |
| Alpha Channel | An aspet of a graphic file that allows creators to specify the level of opacity for areas of graphic, from totally transparent to totally opaque, or anythere in between |
| Scalable Vector Graphics (SVG) | A graphics format that's optimal for encodign line art, and which can be displayed at different dimensions with no decrease in quality |
| Resolution | Specifies how close the dots in a bitmap should appear on the output; measured in dots per inch |
| Dots Per Inch (DPI) | The unit of measurement for image resolution, which specifies how close the dots in the bitmap should apear on the output |
| Pixels | The individual dots that make up an image, used to measure the size of a bitmap image |
| Native | For a bitmap image, this dimension is the original width and height at which the image was saved |
| Baseline | The bottom of text |
| Tiling | The default behavior of user agents when displaying small background images, meaning that, like tiles on a floor or wall, the images are displayed repeatedly both across and down a page to fill up the browser window |
| Favicon | A custom graphic file 16 pixels in width by 16 pixels in height, saved in the .ico format, and named favicon.ico, associated with a Web page; browsers diplay this in the address bar and on the bookmark or favorites menu and bar |
