FILE AND EXTENSION

FILE

A computer file is a block of arbitrary information, or resource for storing information, which is available to a computer program and is usually based kind of durable storage.

EXTENSION

A filename extension is a suffix to the name of a computer file applied to indicate the encoding convention(file format) of its content.

Text File Extension

.docx for text document or MS office 2007/08 for Mac

.doc MS Word Document .dat Data File .rtf Rich text format .txt Plain text File

Audio File Extension .mp3 .amr for GSM based mobile .aac Advance Audio Coding (usually in an MPEG-4

container) .rm Real Media .ra Real Audio File .wma Window media audio file .swa Macromedia Shockwave .amr Adaptive Multi Rate Codec File .midi MIDI File

Video Files Extension .avi Audio Video Interleave .dat Digital Audio Tape .flv Flash Video (encoded to run in a flash animation) .3gp (the most common video format for cell phones) .mkv Matroska is a container format, which enables

any video format such as MPEG-4ASP .rm Real Media .wma Window Media Video .mp4 MPEG-4 Video File .mpg Movie File .mpeg MPEG Movie .mpeg4 MPEG-4 File

Web File Extension

.html Hypertext Markup Language .xhtml Extensible Hypertext Markup

Language .xml Extensible Markup Language .asp Microsoft Active Server page .asp Microsoft Active Server Page .jsp Java server Page

Image File Extension

.bmp Bitmp .tif Tagged Image File .png Portable Network Graphics .gif graphics Interchange Format .jpg or .jpeg Joint Photographic Experts

Group

Compressed File Extension .rar Winzip File .win win rar File .zip Extended zip File

Backup File Extension

.bak Backup File .zip extended zip file

Other Extension .pdf portable document format file .torrent bit torrent file (utility software) .sys system files .cab cabinet file .dbs outlook express email folders .tmp temporary files .drv device driver file .mdb data base .pdb programmable data file .exe executable file