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File Extensions

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Welcome to the PC Matic File Extension Library, the internet's most complete and comprehensive source for file extension information. Over the years PC Matic has developed numerous free scans that diagnose various PC performance issues. Over 200 million scans that have been run all over the world contribute to our file extension libraries.

File Extension Library

PC Matic's File Extension Library is the internet's most complete and comprehensive source for file extension information. Over the years PC Matic has developed numerous free scans that diagnose various PC performance issues. Over 200 million scans that have been run all over the world contribute to our file extension libraries.

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50 Most Common Extensions

Extension Most Used Application File Name
reg Registry Editor regedit.exe
vbs Microsoft ® Windows Based Script Host wscript.exe
jse Microsoft ® Windows Based Script Host wscript.exe
msc Microsoft Management Console mmc.exe
wsf Microsoft ® Windows Based Script Host wscript.exe
msi Windows® installer msiexec.exe
qds Directory Service Find dsquery.dll
vbe Microsoft ® Windows Based Script Host wscript.exe
msstyles Windows Shell Common Dll desk.cpl
wsh Microsoft ® Windows Based Script Host wscript.exe
theme Personalization CPL themecpl.dll
msu Windows Update Standalone Installer wusa.exe
scf Windows Explorer explorer.exe
compositefont Notepad notepad.exe
udl OLE DB Core Services oledb32.dll
wsc Notepad notepad.exe
p7c Windows Contacts wab.exe
wab Windows Contacts wab.exe
hlp Windows Winhlp32 Stub winhlp32.exe
msp Windows® installer msiexec.exe
xbap Windows Presentation Foundation Host presentationhost.exe
xaml Windows Presentation Foundation Host presentationhost.exe
rat Internet Ratings and Local User Management DLL msrating.dll
nfo System Information msinfo32.exe
chm Microsoft® HTML Help Executable hh.exe
js Microsoft ® Windows Based Script Host wscript.exe
url Internet Browser ieframe.dll
xrm-ms Internet Explorer iexplore.exe
psc1 Windows PowerShell powershell.exe
pbk Remote Access Phonebook rasphone.exe
evt Event Viewer Snapin Launcher eventvwr.exe
evtx Event Viewer Snapin Launcher eventvwr.exe
sct Notepad notepad.exe
hta Microsoft (R) HTML Application host mshta.exe
prf Internet Ratings and Local User Management DLL msrating.dll
zip Windows Explorer explorer.exe
diagcfg Diagnostics Troubleshooting Wizard msdt.exe
diagpkg Diagnostics Troubleshooting Wizard msdt.exe
diagcab Diagnostics Troubleshooting Wizard msdt.exe
themepack Personalization CPL themecpl.dll
rtf Microsoft Office Word winword.exe
osdx Windows Explorer explorer.exe
cab Windows Explorer explorer.exe
docx Microsoft Office Word winword.exe
odt Microsoft Office Word winword.exe
mhtml Internet Explorer iexplore.exe
mht Internet Explorer iexplore.exe
wms Windows Media Player wmplayer.exe
wmz Windows Media Player wmplayer.exe
wmd Windows Media Player wmplayer.exe



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