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What is Bitmap?

Definition – What does Bitmap mean?

The bitmap is also known as Raster Graphic is a digital image composed of the matrix of dots and when viewed at 100%, each dot corresponds to an individual pixel on display. In a normal bitmap image, each dot can be assigned to different colors. Together these dots can represent any kind of rectangular image. A graphics interchange format is an example of graphic image file types that contain bitmap.

Glossary Web explains Bitmap

There are several types of bitmap file formats are available to use. The standard uncompressed format is known as BMP format or the device independent bitmap format. It includes a header that defines the size of the photo and the number of colors the image may include and a list of pixels with their corresponding colors. It is known as a simple and universal image format that can be recognized on nearly all platforms. Other Bitmap formats such as GIF, JPEG, and PNG incorporate compression algorithms to reduce the file size, and each format uses a different kind of compression, but they all represent an image as a grid of pixel.

Compressed bitmaps are smaller than uncompressed bitmap files and can be downloaded more quickly. Through most of the images on the internet are compressed bitmaps. If you zoom into the bitmaps image, regardless of the file format, it will look blocky because each dot will take more than a pixel. Therefore, bitmaps images will appear blurry, if they are enlarged. On the other hand, vector graphics are compressed of paths instead of dots and can be climbed without dropping the quality of the image.

Martin Adler

Martin Adler is a Computer Engineer and an accomplished writer with a passion for inspiring everyone with exciting technologies. He loves to explore technical terms and try to deliver something worth reading.