Thursday 15 September 2016

JPG vs BMP File Format

JPGBMP
JPG stands for "Joint Photographic Experts Group".BMP stands for "Bitmap".
Signified by .jpg extension.Signified by .bmp extension.
This are compressed digital images.This are uncompressed bitmap images.
It is comes under raster image file format.It is also comes under raster image file format.
Use JPG if the image has many colors(like photos).Use BMP if you want to save image without compression.Much larger file size.
In windows vista and later the paint program saves its images automatically in JPG format.In windows XP the paint program saves its images automatically in BMP format.
JPG images have low resolution compared to BMP. Because of compression.BMP images have high resolution. Because each and every pixel has it's own specific color.
JPG format is used for color photographs.BMP format is used for printable images and icons.
It is comes under a Lossy compression and Direct colorIt is comes under a Lossless compression, Indexed and Direct color.
JPG format graphic files support up to 16 million colors.Bitmap format are well suited for images with ;limited number of colors.
Advantages:
  • Small image size 
  • Viewable from internet 
  • Uses millions of colors 
Advantages:
  • High image quality 
  • Easy to edit and change 
  • No image loss through process
Disadvantages:
  • High compression loses quality
  • Lower resolution
Disadvantages:
  • Not usually displayed on internet
  • Large file size
First, there are two types of compression: Lossless and Lossy.
  • Lossless means that the image is made smaller, but at no detriment to the quality.
  • Lossy means the image is made (even) smaller, but at a detriment to the quality. If you saved an image in a Lossy format over and over, the image quality would get progressively worse and worse.
There are also different colour depths (palettes): Indexed color and Direct color
  • Indexed means that the image can only store a limited number of colours (usually 256), controlled by the author, in something called a Color Map
  • Direct means that you can store many thousands of colours that have not been directly chosen by the author
Example for JPG vs BMP: