What are the image file formats commonly used in computers, and give the extension.

Common image format extensions include JPEG, GIF, BMP, PSD, TGA and so on.

1, JPEG format

Joint photo expert group. JPEG is also the most common image format, full name: Joint? Photography? Expert? Group named ".. jpg" or ".. jpeg" is the most commonly used image file format. JPEG is a very flexible format, which has the function of adjusting image quality, allowing files to be compressed with different compression ratios and supporting multiple compression levels.

2.GIF format

Graphic interchange format (GIF；; Full name: graphics? Swap? Format) is an image file format developed by CompuServe Company in 1987. The data of GIF file is a continuous tone lossless compression format based on LZW algorithm. Its compression ratio is generally around 50%, and there are a large number of software that use GIF image files in the public domain.

3.PSD format

PhotoShopDocument(PSD) is a special file format of Photoshop image processing software. The file extension is. PSD can support various image features of layers, channels, masks and different color modes. It is an uncompressed original file storage format.

PSD file sometimes has a large capacity, but because it can retain all the original information, it is the best choice to save the unfinished image in PSD format in image processing.

4.BMP format

Bitmap (foreign abbreviation: BMP, foreign full name: BitMaP)BMP is an image file format that has nothing to do with hardware devices and is widely used. It uses bitmap storage format and does not use any other compression except the optional image depth.

So BMP files take up a lot of space. The image depth of BMP file can be selected as lbit, 4bit, 8bit and 24bit. When data is stored in a BMP file, images are scanned from left to right and from bottom to top.

Because BMP file format is the standard for exchanging data related to drawings in Windows environment, all graphics and image software running in Windows environment supports BMP image format.

5.TGA format

Tagged Graphics format is an image file format developed by American Truevision Company for its graphics card. The file extension is "... tga", which has been accepted by the international graphic industry. ?

TGA has a simple structure, belongs to the general format of graphics and image data, has great influence in the field of multimedia, and is the preferred format for converting computer-generated images into TV.

Baidu Encyclopedia-Picture Format