As I mentioned in the previous page, one of the things I love doing in the computer is making cartoonized photos out of digital camera shots. You can say that I love working with photographies while in the computer.

When we upload photo files in the computer, we would have to save them as a file. There are several different file format types for digital photos and scanned images. They include the following: .BMP, .PNG, .JPEG(or .JPG) and .GIF file.

In this part of the topic, I will only be talking about .GIF and .JPEG.(because they are two most dominant format types of web graphics), and what you can do when you are editing an image.

File Format Types
• .JPEG
• .GIF
• .PNG
• .BMP

Definition Types
• Joint Photographic Experts Group
• Graphics Interchange Format
• Portable Interchange Format
• Bitmap

There are similarities differences between .JPEG and .GIF files. As stated in the HTMLHelp website:
"the first thing to understand about GIF and JPEG image formats is that they are both compression based formats. In other words, they take an uncompressed image such as a bitmapped image, and compress them to a smaller file size. The usual result of this conversion is a significantly smaller image size."

Also stated in the HTMLHelp website was that the GIF format is excellent at compressing images that have relatively few colors with no gradations. Most of the images saved in GIF format never exceed more than 10k in the web.

In contrast to JPEG's compression, when there are few colors and no gradations, it results in larger images but they would appear noticeably degraded. However, the JPEG format is great for handling still images, especially with photographs.

.JPEG:
• Good for photographs, naturalistic artwork, and similar material
• Designed to exploit known limitations of the human eye, notably the fact that small color changes are perceived less accurately than small changes in brightness
• Adjustable compression parameters
• Can store 24-bit-per-pixel color data (16 million colors).

.GIF:
• Good for animations
• Transparency
• Stores 8 bits/pixel (256 or fewer colors).
• excellent at compressing images that have relatively few colors with no gradations