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Informations about the GCNO filename extension and the file formats associated with it

We collected the information you should know about the .gcno filename on this page. If you were sent a(n) .gcno file in an e-mail, but you don’t know what to do with it, then you can find help here. We strive to suggest free, open-source applications that are available to everyone for the file formats.

1 filename extension(s) are in our database

.gcno - Gcov Metadata File

The GCNO file is a Development file, which is connected to the Gcov Metadata File according to our registry. With the adequate settings, the Gcov Metadata File (.gcno) files can be opened or converted with the help of GNU Compiler Collection.

Format description:
GCNO format
GNU Compiler Collection
Magic string:
- / -
Related links:
Related extensions:
Gcov Data File
Compiled Object File

Important! Programs other than the ones listed above may also use the .gcno file extension. Even harmful programs can create files with the .gcno extension to store data in them. Always be careful with .gcno files coming from unknown sources. Don’t open executable files that arrived in mails, even if you know the sender.

The .gcno file can’t be opened on your computer?

If the program necessary for opening the .gcno file is installed properly on your computer, then the quickest and simplest way to open the .gcno file is to double-click on the file’s name. If that doesn’t work, then the right software probably isn’t installed on your computer.

While opening the .gcno file, you may receive an error message from the associated application, this can be caused by the following:

Incorrectly given .gcno extension

The .gcno filename extension can be given incorrectly sometimes. The cause of the error could be a mistake or a simple typo. We found the following incorrectly given filename extensions that are the most frequent in the case of .gcno files.

cno, gco, gno

Maybe you’re not even looking for the .gcno file extension?

It’s possible the the file’s extension was given incorrectly. Below, we list some filename extensions that are similar to the .gcno extension. It’s possible that the one you’re looking for is among them.

Genbox Family History Chart Options
GenoPro Genealogy Tree

Associated applications

The Windows operating system stores information about the applications associated to the file extensions in the registry database. The associations can be queried or modified in the Command Prompt window with the "assoc" command.

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We gladly accept application suggestions, but our primary goal is to suggest reliable, open-source applications that can be freely distributed to the users.

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