| A | B |
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| Graphics | anything on a page that is not actual text, from simple line drawings to fully active images found on the World Wide Web |
| Color depth | refers to the number of colors per pixel that can be displayed in an image and affects image quality and file size. |
| Compression | refers to the mathematical algorithm used when an image is saved in order to reduce the file size. |
| Lossless | no data is lost during compression |
| Lossy | some data is lost during compression. |
| Portability | ease at which files are opened, modified, and viewed on computers using different operating systems, software and browsers. |
| Transparency | the background of an image is “see-through” so that the graphic can blend into the background without having a white box around it. |
| Inches (in) | the standard unit of measurement for US standard size papers that can work well for print |
| Pixels (px) | the most common unit of measurement used for computer screen display. |
| Points (pt) | the standard unit of measure for typefaces, with 1 point representing 1/72 of an inch, |
| Picas | a unit of measurement for lines of type with one pica equal to 1/6 of an inch |
| Resolution | the amount of detail stored for an image. The higher the resolution, the higher the level of detail in the image. |
| PPI (pixels per inch) | The number of pixels in one inch. More pixels per inch means better image quality but larger file size. |
| On-screen resolution | monitors can display an image at a resolution of 72 ppi. |
| Print resolution | documents that are being sent for print should be 300 PPI to ensure image quality |
| DPI (dots per inch) | the number of dots of ink or toner per inch on a printed image. |
| RGB (red, green, blue) | assigns an intensity value to each pixel that ranges from 0 to 255 for each of the red, green, and blue components in an image |
| CMYK (cyan, magenta, yellow, black) | assigns a percentage value for each of the process inks. |
| Raster graphics | also called bitmaps, are images composed of grids of pixels that have a fixed resolution |
| Native file formats | editable file formats that are proprietary to a specific program that generally lacks portability and is not meant to be used with other software. |
| Standard file formats | file formats that can be used with a variety of software programs.Standard file formats include, but are not limited to: .gif, .jpg, .png, and .tif. |
| PSD | Photoshop Document |
| GIF | Graphics Interchange Format (i) Standard format on web for animation |
| JPEG | Joint Photographic Experts Group (i) Supports 16 million colors (ii) Photographs and natural artwork |
| PNG | Portable Network Graphic (i) Supports several different color depths; including 256 colors and 16 million colors (ii) Replacing GIF and TIFF images |
| TIFF | Tagged Image File Format (i) High resolution printing (ii) Desktop publishing images (iii) Storage container for faxes and other digital images |
| PDF | Portable Document Format (i) Open standard, platform independent format that embeds fonts, images, layouts, and graphics (ii) Viewable with Acrobat Reader, a free program by Adobe Publishing electronic documents and ebooks |
| Aspect Ratio | relationship of an object’s width to its height. |
| Cropping | removing a part of an image. |
| Layering | compiling multiple pictures or objects together into one image. |
| Selections | identifying a specific area of a layer or image that allows you to move or apply techniques to only that specific area on that specific layer. |
| Transparency | removing the background color of a raster image making it “see-through” in order to allow the image to blend in with its background. |
| Transforming | changing a graphics size or dimensions through commands such as scaling and rotating. |
| Scaling | enlarging or shrinking a graphic. |
| Rotating | pivoting an object around its center point. |
| Layer Styles | One or more effects applied to a layer or layer group. Effects include shadows, stroke, glows, bevels, and overlays. |
| Layer Masks | A non-destructive method which allows you to apply transparency to a specific portion of a layer with precise control. |
| Fill | putting a color, gradient, pattern, or texture into an object or area. |
| Gradient | filling an object with a smooth transition from one color to another. |
| Adjustment Layers | Non-destructive layers that can be added to allow you to apply image tonal and color adjustments. |
| Filters | used to apply special effects or unique transformation to an image. |
| Clone Stamp | samples and area of an image and then allows you to paint over another area of the image with the sampled area. |
| Blend Modes | change the way layers interact by determining how a layer will blend with the layers below it. |
