File Name Extensions - File Format

A friend sends you some files that have to be output and upon opening the folder, you notice it is filled with .qrw files. What the hell are .qrw files? Below is an overview of filename extensions.

A-B - C-D-E - F-G-H - I-J-K - L-M-N - O-P-Q - R-S-T - U-V-W - X-Y-Z

.a11

graphics AIIM image file

.afm

Adobe Font Metric file, used to provide information on Adobe fonts.

.ai

Adobe Illustrator drawing

.aiff

audio interchange file

.aif

audio interchange file

.apd

Aldus PageMaker document

.arc

file compressed using the arc program. It can be decompressed by several utilities on the market.

.ark

file compressed using the arc program. It can be decompressed by several utilities on the market.

.arj

file compressed using the arj program. It can be decompressed by several utilities on the market.

.au

audio format that originated on UNIX systems

.awk

script that uses the AWK language

.bak

backup file

.bat

batch file for the MS-DOS operating system. May also work on Windows systems.

.bdf

bitmap distribution format, a file used for storing bitmapped fonts on Unix systems

.bmp

Microsoft bitmap image format, can be opened in PhotoShop.

.bsh

Bourne Shell script or Bourne-Again Shell script for Unix systems

.bz2

file compressed using the bzip2 program

.c

source file written in the C++ programming language

.cgi

common gateway interface file

.cgm

computer graphics metafile, an image file

.chr

generic extension indicating "character" data

.com

command file, a program for an MS-DOS or Windows system

.csh

C-Shell script for a Unix system

.css

cascading style sheet file, used to define a cascading style sheet for a web page

.cwk

AppleWorks (or ClarisWorks) document that can contain text, a spreadsheet, a database, a presentation or a drawing

.cws

AppleWorks stationery

.

.dat

generic extension for a data file (often ASCII)

.doc

generic extension indicating some sort of text document, usually in ASCII. Both FrameMaker and MS-Word often save their native format files with this extension as well.

.dwf

DEC Windows Format, a format for storing bitmapped fonts on DEC UNIX systems

.emf

Windows enhanced metafile, a format for graphic data

.eps

encapsulated PostScript file that can contain text, bitmap images and vector data.

.exe

a program for an MS-DOS or Windows system

.f3

Sun Folio format, used for storing vector fonts on Sun UNIX systems

.f3b

Sun Folio format, used for storing vector fonts on Sun UNIX systems

.f66

source file written in the FORTRAN programming language

.f77

source file written in the FORTRAN programming language

.f90

source file written in the FORTRAN programming language

.faq

ASCII document that answers frequently asked questions.

.fla

Macromedia Flash file; containing flash graphics used on web pages

.fm

FrameMaker file

.fpx

Kodak FlashPix image

.ftk

FastTrack audio data

.ged

EnerGraphics graphics editor file

.gif

general image format file, containing an image or simple animation. These files can be opened in PhotoShop.

.gz

compressed file. Can be decompressed using any of the utilities on the market that support ZIP-compression.

.h

header file written in either C or C++

.hdf

hierarchical data format file, it supports the storage of many different data types, including images and tables. On most platforms, tools are available that can handle HDF files.

.hqx

BinHex file. Binhex encoding originated on Macintosh. It is used when files are transfered on internet or via email. Binhex decoders can be found for Windows, MS-DOS and UNIX as well as Macintosh.

.htm

hypertext markup language file (a web page)

.html

hypertext markup language file (a web page)

.iax

IBM Image Access Executive graphics file

.jar

Java archive

.java

file written in the Java language

.jbg

image file, optimized for FAX type images. Free viewing programs are available for most platforms.

.jbig

image file, optimized for FAX type images. Free viewing programs are available for most platforms.

.jpeg

image, compressed using the JPEG compression algorithm

.jpg

image, compressed using the JPEG compression algorithm

.js

file containing JavaScript data

.key

keyborad macro

.lbr

Lotus 1-2-3 display driver

.lwf

image file

.mac

generic extension for macro file

.mf

MetaFont file, used to store font information for Tex systems

.mid

musical instrument digital interface file (audio file)

.midi

musical instrument digital interface file (audio file)

.mif

maker interchange format file, a type of FrameMaker file

.miff

ImageMagic image file

.mod

audio module file, can be played on all platforms

.mov

QuickTime file, containing either a movie or sounds

.mp3

mpeg compressed audio file

Musictime sound file

AutoCad Autoflix movie command file

.nap

VideoShow file

.new

.old

generic description for old backup file

.pas

source file written in the Pascal programming language

.pbm

portable bitmap format file, ian ASCII image format designed primarily to be portable across different platforms.

.pcf

Portable Compiled Format file, containing bitmapped fonts for X-windows systems

.pdd

PhotoDeluxe Data image

.pdf

Portable Document Format file, can be opened using Acrobat Reader, a freeware program that can be downloaded from the Adobe website

.pfa

PostScript font ASCII file, used for storing vector fonts on the X-Windows system

.pfb

PostScript font binary file, used for storing vector fonts

.pfm

printer font metric file, used to provide font information on an Windows machine

.pgm

portable graymap format file (an ASCII image format)

.phtml

similar to shtml but not as common

.pict

Macintosh bitmap picture format

.pct

Macintosh bitmap picture format

.pic

Macintosh bitmap picture format

.pk

TEX packed font file, used for storing bitmapped fonts

.pkg

probably a Newton package (remember Newton, the next big thing from Apple?)

.pl

Perl script, a program written in the Perl language

TEX property list file

.pm3

Adobe PageMaker 3.x document

.pm4

Adobe PageMaker 4.x document

.pm5

Adobe PageMaker 5.x document

.png

portable network graphics image, can be opend in PhotoShop

.ppm

portable pixmap file, contains an ASXII-encoded image

.ppt

Microsoft PowerPoint document

.press

source files for the Newton Press program

.ps

Postscript file

.psd

Adobe PhotoShop file, containing an image. Can be opened in some other image manipulation programs.

.pxr

Pixar image, can read by numerous different image manipulation programs for several different platforms.

Apple QuickTime movie

;qxd

.ras

Sun rasterfile format (old image file format)

.rtf

rich-text format file, can be opened in Word or imported in Xpress or PageMaker (provided the necessary filter is installed)

.sav

backup file

.sda

self-dissolving archive contains compressed data that should in theory decompress itself when run. StarOffice also saves its drawing program documents with this extension

.sdc

StarOffice spreadsheet document

.sdd

StarOffice presentation

.sdw

StarOffice word processing document

.sea

self-extracting archive, mainly used on Mac but decompression is also possible on Windows systems. Doubleclicking it should decompress the data. Can be created using Stuff-it

.sfl

SoftFont file, used for storing bitmapped fonts for HP printers

.sfp

SoftFont file, used for storing bitmapped fonts for HP printers

.sfs

SoftFont Scalable font file, used for storing vector fonts for HP printers

.sfx

self-extracting archive

.sh

Bourne Shell script

.shar

group of files that are combined into a single file, mostly used on Unix systems

.sha

group of files that are combined into a single file, mostly used on Unix systems

.shm

HTML file utilizing server-side includes

.shtml

HTML file utilizing server-side includes

.sid

audio file. Free SID players are available for most platforms.

.snf

server normal format, used for storing bitmapped fonts

.spd

Bitstream Speedo format file, used for storing vector fonts on the X-Windows system

.swf

Macromedia Flash animation, used on web pages

.tar

groups of files combined into one file, created using the tar program

.tcl

program written in the Tcl programming language

.tem

template file written in the C++ programming language

.tgz

group of files that have been combined (using tar) and then compressed (using gzip)

.tiff

image saved using the tagged image file format, can be opened in most image manipulation programs

.tif

image saved using the tagged image file format, can be opened in most image manipulation programs

.ttf

Truetype font file, used for storing vector fonts. .TTF is also used for OpenType fonts containing TrueType font data.

.txt

generic extension for simple text files (usually ASCII)

.text

generic extension for simple text files (usually ASCII)

.ul

uLaw audio file

.uu

uuencoded file, converted from binary to ASCII so it can be safely transported across the internet or via email. Uuencoding originated on Unix systems but encoders and decoders are now available for virtually every computer platform. Unfortunately it was never really standardized, so sometimes uudecode on one machine will not properly work on something that was uuencoded on another.

.uue

uuencoded file, converted from binary to ASCII so it can be safely transported across the internet or via email. Uuencoding originated on Unix systems but encoders and decoders are now available for virtually every computer platform. Unfortunately it was never really standardized, so sometimes uudecode on one machine will not properly work on something that was uuencoded on another.

.vf

virtual font file, used to store composite font information for machines that have TEX installed

.wav

waveform audio file, one of the most popular audio formats

.wdb

DataViz document

.wk1

Lotus 123-2 document, can be opened in other spreadsheets as well

.wks

Lotus 123-1A spreadsheet

.wmf

Windows metafile, the equivalent of the Macintosh PICT format

.wpd

WordPerfect document, can probably be opened in other wordprocessors as well

.wp4

WordPerfect 4.x document, can probably be opened in other wordprocessors as well

.wp5

WordPerfect 5.x document, can probably be opened in other wordprocessors as well

.wp6

WordPerfect 6.x document, can probably be opened in other wordprocessors as well

.wpp

WordPerfect document, can probably be opened in other wordprocessors as well

.xbm

X bitmap file, containing small icons

.xls

Excel spreadsheet document

.xpm

X pixmap file, containing small icons

.xwd

X-Windows dump file, similar toa bmp or pict file

.yuv

YUV graphics file

.z

UNIX compressed data

.zip

file compressed using the zip or pkzip program, the sxtandard compression algorithm for PCs