ⓘ Computer file formats ..

File format

A file format is a standard way that information is encoded for storage in a computer file. It specifies how bits are used to encode information in a digital storage medium. File formats may be either proprietary or free and may be either unpublished or open. Some file formats are designed for very specific types of data files like PNG, for example, store bitmapped images using lossless data compression. However, other file formats designed to store different types of data: the OGG format can act as a container for various types of multimedia, including any combination of audio and video, ...


The.dbf file extension represents the dBase database file. The file type was introduced in 1983 with the introduction of dBASE II. The file structure has evolved over the years to include many more features and capabilities and has introduced various other files to help support data storage and manipulation. The current.dbf file level is called Level 7. The.dbf format is supported by a number of database products.

List of file signatures

This is a list of file signatures, data used to identify or verify the content of a file. Such signatures are also known as magic numbers or Magic Bytes. Many file formats are not intended to be read as text. If this file is accidentally viewed as a text file, its contents will be unintelligible. However, sometimes the file signature can detect when interpreted as text. In column ISO 8859-1 shows how the signature appears when interpreted as text in the common encoding is ISO 8859-1, with unprintable characters represented as.

3GP and 3G2

3GP is a multimedia container format defined by the Third Generation Partnership Project for 3G UMTS multimedia services. It is used on 3G mobile phones but can also be played on some 2G and 4G phones. Files 3g2 3gpp2 file format is a multimedia container format defined by the 3gpp2 for 3G CDMA2000 multimedia services. It is very similar to the 3gp format, but consumes less space and bandwidth also has some extensions and limitations in comparison to 3gp.

Au file format

The Au file format is a simple audio file format introduced by Sun Microsystems. The format was common on NeXT systems and on early Web pages. Originally it was headerless, being simply 8-bit μ-law-encoded data at an 8000 Hz sample rate. Hardware from other vendors often used sample rates as high as 8192 Hz, often integer multiples of video clock signal frequencies. Newer files have a header that consists of six unsigned 32-bit words, an optional information chunk and then the data. Although the format supports many audio encoding formats, it remains associated with the µ-law logarithmic e ...