| A | B |
|---|
| lossless | File compression that doesn't lose original data |
| lossy | "Loses" part of the image, but maintains enough of the image to look acceptable |
| .jpg | Also known as .jpeg (pronounced jay-peg). A common "lossy" file compression often used with photos. Can have millions of colors. |
| .gif | Graphical Interchange Format. A lossless format that can only hold 256 colors. Best for diagrams, simple drawings. |
| .png | Portable Network Graphic. A newer file format that is lossless, but can hold up to 16,000,000 colors. |
| Fireworks native .png | .PNG files created in the Fireworks program. Stores the data about layers, tools used, etc., so files can be edited at a later time. |
| copyright | protection for intellectual property |
| intellectual property | consists of anything an individual has written or created. It might be music, text, pictures, photographs, sounds, dances, and so on. |
| Fair Use Doctrine | Part of copyright laws. It states that limited portions of material may be used without written permission for certain purposes, such as reporting the news and schoolwork. It does not define "limited", so you must be careful not to overuse material. Fair use doctrine requires you to give credit to the author or creator of any material you use. |
| Derivative Works | Copyrighted materials that have been altered or changed. Such material is protected by copyright laws. If you alter a copyrighted photograph using computer software, that photograph is still protected, and you may not use it without written permission. |
| compression | Changing the picture to get rid of redundancy, or repetitive items/pixels so that the file size is smaller |
| optimization | Finding the best balance between image quality and file size |
