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Questions tagged [file-extension]

A file extension is an optional alphanumeric identifier which comes after the last found period in a file name. A file extension itself does not define what type of data is in a file, but it does give a hint as to what is supposed to be in the file.

308 questions
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Differences between TIFF,TIF,tiff,tif

I have seen TIFF files having various extensions - TIFF,TIF,tiff,tif. Are they same? Can I safely rename a file with TIFF extension to tif or will it cause loss of information?
Chethan S.
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7
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1 answer

Why does my Windows open CSS file with notepad?

In CMD I get this: C:\>assoc .css .css=CSSfile C:\>ftype CSSfile File type 'CSSfile' not found or no open command associated with it. But in explorer, CSS files have icon and I can double click and notepad is used to open it. Why does my Windows…
Gqqnbig
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6 answers

How can I find out about an unknown file extension?

When I have a random file of unknown format with a file extension I've never heard of, where can I turn to find out about the extension. The obvious choice is to google the extension along with some combination of the words "file", "extension", and…
Ryan C. Thompson
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3
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1 answer

how can i create security catalog(.cat file)

A catalog file contains a list of files and a digest of those files. A digest is a number generated by an algorithm to uniquely identify a given file, like a fingerprint. The digest is used for security/validation purposes. what is usage of this…
AminM
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vote
1 answer

What are TQS, TQI and the TQP file extensions, and how can I open them?

I'm using some old software on windows that looks like it accesses a database to serve up some questions. I'd like be able to access the database, but when I go into the data directory there are 3 files, named questions.TQI, questions.TQS and…
James
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2 answers

Is there a disadvantage to not using text file extensions?

I recently learned that file extensions (at least for plain text) in a Unix-like environment generally don't have meaning. Whether a bash script has a .sh,.log,.txt, or .hgfjgfdjgd, it can still run if you make it executable with chmod +x…
LanceLafontaine
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1
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1 answer

What is the type of files I get when downloading the source code of .NET Framework?

I want to download the source code of .NET Framework 4. From the official website, I get the files with the extension .aspx; WinRAR is pretending that those are broken CAB files, and Windows won't open them if they are renamed to .cab or .exe. What…
Arseni Mourzenko
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1
vote
1 answer

How do you open or view the contents of .ch3 files?

We have some Harvard Graphics containing documentation from a legacy system. How can I open or view the contents of these .ch3 files? Or has the file format gone past deprecation?
Arne W
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1
vote
2 answers

APPINSTALLER File (.appinstaller) - Is there a way to extract or convert to EXE.MSI

I have an (.appinstaller) (file) application that I would like to be able to convert it to a traditional msi/exe package... I cant seem to find anything out there... Anyone able to help with this matter, thanks in advance!
Gino M
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1 answer

How can I convert text files with an unusual extension (.1 .2 .3 .4) into an image file?

Duplicate file names aren't saved as abc (1).jpeg, but instead abc.jpeg.1. They're inaccessible as an image; they're just text instead. I've tried a bunch of websites and so far only convertio has worked, but it has a 10 file limit. They do turn…
koolcat
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1
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How to open a file with .ghi extension?

Does anybody know how to open or convert to an more common format this type of file? Google says that this may be an configuration file but the person who provided this file says this is a record from a camera.
Frederick Castello
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0
votes
1 answer

Incorrect File association for .exe files in Windows

I accidentally chose 'open with this program this kind of file' for .exe files. Now, all the files with a .exe extension open with a particular program. My computer does not have an earlier restore point so I can't restore to an earlier time. How to…
John Kariuki
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1 answer

How to open/convert a .xmdx file?

I have a file that was sent to me with a .xmdx extension. Is there any way to convert it to something readable or open it with a third party application? I have never seen a file like this before so I don't even know where to begin.
JSW189
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0
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1 answer

How do I open a BDC file?

I have a file with a .bdc extension. I've read that it's some kind of dictionary file, but I have no clue what software I can use to open it. Can someone help me out?
scarhand
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Can someone help me open this .file file?

I found an old file of mine and I'm wondering if someone could identify its extension and help me open it. Every time I open it it opens Notepad…
Cole
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