iMedia R093 Key Terms: 4.2 - Properties & formats of media files

The number of pixels stored in an image, measured in PPI (Pixels per inch)/DPI (Dots per inch). The higher the resolution, the sharper the quality of the image.

• Image files: DPI/PPI resolution
• Image files: pixel dimensions
• Image files: bitmaps (raster)
• Image files: vectors

Helps to determine the dimensions of an image which is measured by the number of pixels in height x number of pixels in length.

• Image files: DPI/PPI resolution
• Image files: pixel dimensions
• Image files: bitmaps (raster)
• Image files: vectors

Made up of pixels which help to determine the dimensions of an image which is measured by the number of pixels in height x number of pixels in length.

• Image files: DPI/PPI resolution
• Image files: pixel dimensions
• Image files: bitmaps (raster)
• Image files: vectors

Made up of lines of curves using mathematical equations to determine the scale of the graphic. It doesn’t use pixels and is not dependent on resolution. Commonly used to create logos.

• Image files: DPI/PPI resolution
• Image files: pixel dimensions
• Image files: bitmaps (raster)
• Image files: vectors

This is a bitmap image file format. Uncompressed.

• Image files: BMP
• Image files: JPG
• Image files: PNG
• Image files: GIF

This is a bitmap image file format. Uses lossy compression. Commonly used to store photographs.

• Image files: BMP
• Image files: JPG
• Image files: PNG
• Image files: GIF

This is a bitmap image file format. Uses lossless compression. Supports transparency. Commonly used for web graphics.

• Image files: BMP
• Image files: JPG
• Image files: PNG
• Image files: GIF

This is a small bitmap file that allows animation and transparency at a reduced quality with a maximum of 256 colours.

• Image files: BMP
• Image files: JPG
• Image files: PNG
• Image files: GIF

This is a vector image file format. Uses lossless compression. Small in file size. Commonly used for web graphics.

• Image files: PNG
• Image files: GIF
• Image files: SVG
• Image files: TIFF

This is a bitmap image file format. Uses lossless compression. Large in file size. Commonly used for print graphics.

• Image files: PNG
• Image files: GIF
• Image files: SVG
• Image files: TIFF