Email attachments - file type list

Quick reference, email attachment.
List of file types.

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More information is available at my More information, email attachment safety.


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Description of file Safety Rating



.bas script, Basic programming lanquage Dangerous, Common
.bat script, DOS batch file Dangerous, Common
.cmd script, advanced batch file Dangerous, Common
.com program, older DOS Dangerous, Common
.dll program helper file (Dynamic Link Library) Dangerous, Common
.eml Microsoft Internet Mail Message Dangerous, Common
.exe program, 'executable' Dangerous, Common
.pif program start information file Dangerous, Common
.reg Windows registry, import/export data Dangerous, Common
.scr screen saver file Dangerous, Common
.vbe programming, Visual Basic Scripting Dangerous, Common
.vbs programming, Visual Basic Scripting Dangerous, Common
.wsc scriptlet file Dangerous, Common
.wsh programming, windows scripting Dangerous, Common
.bin application/octet-stream" Dangerous, non-standard
.c programming, C++ Dangerous, non-standard
.cpl Control Panel application Dangerous, non-standard
.java programming, internet universal scripting Dangerous, non-standard
.js programming, javascript (see .java) Dangerous, non-standard
.jse scipt Dangerous, non-standard
.pl PERL programming, UNIX internet server script Dangerous, non-standard
.sct programming, scriptlet file" Dangerous, non-standard
.wsf Script Dangerous, non-standard
.alx HTML Layout Caution, low risk
.cur Cursor (pointer) definition Caution, low risk
.dic Dictionary Caution, low risk
.dot MS Word Template, for starting a new document Caution, low risk
.htm web page, Hyper Text Markup File Caution, low risk
.html web page, Hyper Text Markup File Caution, low risk
.oft MS Outlook Template Caution, low risk
.pot MS Powerpoint Template Caution, low risk
.shtml web page, Secure Hyper Text Markup File Caution, low risk
.asp Active Server Page, web page definition Caution, may contain nasty programming
.doc MS Word Document Caution, may contain nasty programming
.ppt MS Powerpoint data file Caution, may contain nasty programming
.wb2 spreadsheet, Quattro Caution, may contain nasty programming
.wbk MS Word, backup file Caution, may contain nasty programming
.wiz MS Word, wizard defination Caution, may contain nasty programming
.wk4 spreadsheet, Lotus 123 Caution, may contain nasty programming
.wks spreadsheets, MS Excel worksheet Caution, may contain nasty programming
.wpd Word Perfect document Caution, may contain nasty programming
.xlk MS Excel, backup file Caution, may contain nasty programming
.xls MS Excel, spreadsheet book Caution, may contain nasty programming
.cab compressed file storage Caution, may contain infected files
.gtar compressed file storage Caution, may contain infected files
.gz compressed file storage Caution, may contain infected files
.tar compressed file storage (UNIX) Caution, may contain infected files
.tgz compressed file storage (UNIX) Caution, may contain infected files
.uu UUEncode, internet transfer format for all files Caution, may contain infected files
.z compressed file storage (UNIX) Caution, may contain infected files
.zip compressed file storage Caution, may contain infected files
.fav Outlook Navigator Bar File Caution, could activate local program
.grp windows program manager file Caution, could activate local program
.lnk link - shortcut definition Caution, could activate local program
.url Internet Shortcut Caution, could activate local program
.xml web page, Extended Markup Lanquage Caution, could activate local program
.inf information file, usually for install Caution, local settings could be altered
.ini initialization information, settings Caution, local settings could be altered
.msi MS installer, package information Caution, local settings could be altered
.msp MS installer, patch information Caution, local settings could be altered
.pbk phone book, Dial Up Networking & others Caution, local settings could be altered
.sys system information file Caution, local settings could be altered
.ttf True Type Font Caution, local settings could be altered
.vir Norton anti-virus definition file Caution, local settings could be altered
.au audio, basic Safe, common
.avi video Safe, common
.bmp image, bit-map Safe, common
.cdr data, Corel Draw Safe, common
.drw CAD, drawing file Safe, common
.dwg CAD, Adobe Illustrator, drawing file Safe, common
.dxf CAD, universal Data eXchange Format Safe, common
.eps image, post script Safe, common
.gif image, internet Safe, common
.ico icon file Safe, common
.img image file Safe, common
.jpeg image, internet Safe, common
.jpg image, internet Safe, common
.log log file - generic Safe, common
.mdb MS Access, database file Safe, common
.mde MS Access, database file (can't change design) Safe, common
.mid audio, MIDI file Safe, common
.midi audio, MIDI file Safe, common
.mov movie, quicktime format Safe, common
.movie movie, sgi format Safe, common
.mp1 audio, mpeg format Safe, common
.mp2 audio, mpeg format Safe, common
.mp3 audio, mpeg format Safe, common
.mpeg video, MS format Safe, common
.mpg video, MS format Safe, common
.msg message file Safe, common
.nws Microsoft Internet News Message Safe, common
.obd MS Office Binder Safe, common
.pcx image, black & white (fax) Safe, common
.pdd image, Photo Deluxe format Safe, common
.pdf Acrobat Reader document, Adobe Portable Document Format Safe, common
.pic image Safe, common
.pps MS Powerpoint Slide Show Safe, common
.pub MS Publisher data file Safe, common
.qbb Intuit Quick Books Backup file Safe, common
.qbw Intuit Quick Books work file Safe, common
.qdb Intuit Quicken data file Safe, common
.ra RealPlayer, real audio information Safe, common
.snd audio Safe, common
.text plain text Safe, common
.tga image Safe, common
.tif image Safe, common
.tsv tab seperated values Safe, common
.txt plain text Safe, common
.wav audio Safe, common
.wma audio Safe, common
.wmf MS windows metafile Safe, common
.wri document, MS Write Safe, common
.cda audio, CD format Safe, non-standard
.chf PCAnywhere, remote control config Safe, non-standard
.gwf PCAnywhere Gateway File Safe, non-standard
.hlp help file Safe, non-standard
.ht Hyperterminal setting file Safe, non-standard
.iso CD-Recordable image Safe, non-standard
.ldb MS Access, lock file Safe, non-standard
.mdw MS Access, workgroup security file Safe, non-standard
.pcl output to printer, HP Safe, non-standard
.xlt MS Excel, new spreadsheet template Safe, non-standard
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