COOKIE file format description

Many people share .cookie files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .cookie file can be edited, converted or printed with. On this page, we try to provide assistance for handling .cookie files.

1 filename extension(s) found in our database.

.cookie - HTTP Cookie Data

The COOKIE data files are related to Notepad. The COOKIE file is a HTTP Cookie Data. An HTTP cookie is a small piece of data sent from a website and stored on the user's computer by the user's web browser while the user is browsing. The Notepad seems to be no longer supported.

Data files
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HTTP Cookie Data related extensions:
Notepad++ Data
NASA Ames Data Exchange
Android Related Readme
Nimbus 7 SAMS APRIORI Data
Microsoft Exchange Non-Delivery Report Message
BBS Directory List

Naturally, other applications may also use the .cookie file extension. Even harmful programs can create .cookie files. Be especially cautious with .cookie files coming from an unknown source!

Can't open a .cookie file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .cookie file format, then write to us! >> COOKIE file