Windows
Support Guide

Applies to: Microsoft Windows (All versions)
Home Find file extension (eg.: .doc,.png)

File extension?

A file extension is a suffix to the name of a computer file, which defines and determines easily the file's generic type. In Windows and DOS operating system file extension is a requirement whereas, in some other operating system such as UNIX it is optional. Usually the file extension consists of two, three or four characters following a period.
Awards
Systweak products are running on
over 10 million computers worldwide
"Winner of over 100 5-star awards"
Recently updated file 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 |

Find file extension (eg.: .pdf)

.j - Miscellaneous file type

.j2c - Image file type

.j2k - Image file type

.jad - Data file type

.jam - Miscellaneous file type

.jan - Miscellaneous file type

.jap - Miscellaneous file type

.jar - Archive file type

.jas - Image file type

.jasc - Image file type

.jaskin - Miscellaneous file type

.jav - Source code and script files

.java - Source code and script files

.jb2 - Miscellaneous file type

.jbc - Miscellaneous file type

.jbd - Data file type

.jbf - Graphic file type

.jbg - Graphic file type

.jbig - Graphic file type

.jbk - Backup file type

.JBP - Miscellaneous file type

.jbr - Miscellaneous file type

.jbx - Miscellaneous file type

.jcd - Miscellaneous file type

.jcf - Configuration file type

.jcn - Miscellaneous file type

.jcp - Miscellaneous file type

.jcvg - Miscellaneous file type

.jcw - Miscellaneous file type

.jcx - Miscellaneous file type

.jdf - Miscellaneous file type

.jef - Data file type

.jeq - Miscellaneous file type

.jet - Miscellaneous file type

.jewelquestSavedGame - Miscellaneous file type

.jewelquestsolitaire...dll - Miscellaneous file type

.jff - Miscellaneous file type

.jfi - Image file type

.jfif - Graphic file type

.jfs - System file type

.jfx - Miscellaneous file type

.jgen - Miscellaneous file type

.jhtml - Internet related file type

.jic - Miscellaneous file type

.jif - Image file type

.jkbm - Miscellaneous file type

.jlr - Miscellaneous file type

.jls - Image file type

.jmd - Miscellaneous file type

.jmp - Miscellaneous file type

.jmpskin - Miscellaneous file type

.jms - Video file type

.jmx - Miscellaneous file type

.jng - Image file type

.jnlp - Internet related file type

.jnt - Text file type

.job - Miscellaneous file type

.joboptions - Miscellaneous file type

.jobx - Miscellaneous file type

.jod - Miscellaneous file type

.jor - Database file type

.jou - Text file type

.jp_ - Miscellaneous file type

.jp2 - Image file type

.jp2e - Miscellaneous file type

.jpa - Backup file type

.jpc - Image file type

.jpd - Source code and script files

.jpe - Image file type

.jpeg - Image file type

.jpeg_ - Miscellaneous file type

.jpf - Miscellaneous file type

.jpg - Image file type

.jpg;.jpeg;.jpe;.jfi...dll - Miscellaneous file type

.jpg1 - Miscellaneous file type

.jpk - Miscellaneous file type

.jpm - Miscellaneous file type

.jpr - Miscellaneous file type

.jps - Miscellaneous file type

.jpt - Miscellaneous file type

.jpx - Image file type

.jqx - System file type

.jrn - Data file type

.jrs - Data file type

.js - Internet related file type

.js_aq - Miscellaneous file type

.jsa - Miscellaneous file type

.jscript - Miscellaneous file type

.jse - Executable file type

.jse_aq - Miscellaneous file type

.jsee - Miscellaneous file type

.jsf - Miscellaneous file type

.jsfl - Miscellaneous file type

.jsk - Miscellaneous file type

.jsl - Miscellaneous file type

.jsm - Miscellaneous file type

.jso - Archive file type

.json - Backup file type

.jsp - Internet related file type

.jss - Miscellaneous file type

.jsv - Miscellaneous file type

.jsx - Executable file type

.jsxbin - Plugin file type

.jsxinc - Miscellaneous file type

.jtd - Miscellaneous file type

.jtf - Graphic file type

.jti - Miscellaneous file type

.jtif - Miscellaneous file type

.jtp - Miscellaneous file type

.jts - Miscellaneous file type

.jtt - Miscellaneous file type

.jtx - Text file type

.jvx - Miscellaneous file type

.jwc - Miscellaneous file type

.jwl - Miscellaneous file type

.jzz - Miscellaneous file type

# | 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 |

 

All information © 2010 Systweak Inc. Advanced File Optimizer is promoted by Systweak. To remove Advanced File Optimizer simply uninstall the evaluation version. Systweak is not affiliated with Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation.