what is difference between bitmap image and jPeg image?

Answer 1

This will definately help: - http://computer.howstuffworks.com/question408.htm
http://graphicssoft.about.com/od/aboutgraphics/a/bitmapvector.htm


Hasnain Mir Mohammed

Answer 2

The two most common by far are GIF and JPEG files. Both of these formats encode static (as opposed to animated) bitmap images.

In a bitmap image, the image file has to define the exact color of every pixel in the image. For example, imagine a typical bitmap on the web that is 400 by 400 pixels. To define this image, you would need 24 bits per pixel for 160,000 pixels, or 480,000 bytes. That would be a huge image file, so both the GIF and JPG formats compress the image in different ways.

In a GIF image, the number of colors is reduced to 256 and then "runs" of same-color pixels are encoded in a color+numberOfPixels format. For example, if there are 100 pixels on a line with the color 41, the image file stores the color (41) and the length of the run (100).

A JPG file uses a much more complex technique to compress images, like photographs, where the color of every pixel is different. A GIF file creates a perfect reproduction of the original, while a JPG does not. See Question 289 for some details.

An animated GIF is a sequence of GIF files all bonded together and displayed one after the other. With enough panes, you can get very realistic animations. However, the size of the file is the sum of the GIF files used to create the sequence, and that can add up quickly.

Answer 3

Bitmaps are generally large files, and JPEG files are generally smaller. By large, I do not mean the size of the picture, but the size of the file. If you save the same picture as a bitmap and as a JPEG file, the JPEG file will be smaller. The biggest difference, however, is that a browser (IE, Firefox, etc) will show a JPEG file, but will not show a bitmap file. JPEG files are good for digital photos where you need lots of different colors. Bitmaps are used more in software (like Windows icons, for example) where file size is not as important.

Answer 4

The Bitmap o well known as .bmp offers more detail on the image, also it saves more information about the image than the jpeg but the price of use this image format is that You'll use more space on your hard disk, usb memory ..., the jpeg or .jpg is a image format that keeps a lot of detail, but not as the .bmp, and it's very useful for home digital photocameras and for devices that don't have a lot of free space on the memory.

Answer 5

Despite the huge file size, the simplicity of BMP and its widespread familiarity in MS Windows and elsewhere, as well as the fact that this format is well-documented and free of patents, makes it a very common format that image processing programs from many operating systems can read and write.


JPEG provides for lossy compression of images (although there are variations on the standard baseline JPEG which are lossless). The file format which employs this compression is commonly also called JPEG; the most common file extension for this format is .jpg

bmp better but file size bigger
jpg best if filesize is a factor

Answer 6

bitmap is image file ocupying a very large disk space
it contains large amount of details.some of them are invisible to the human eyes

jpeg(joint photographic experts group) is image compression technique. this removes the unnecessary data in the image.
so very less disk space

Answer 7

a bitmap is uncompressed, while a jpeg is compressed, making it much smaller. Depending on the compression percentage, it may be slightly worse quality (but much smaller!)

Answer 8

Quality and compression. Bitmaps are bigger in size and more "crisp", jpegs use compression and can come out slightly pixellated.

Answer 9

Jpeg is compress and bitmap is not.