Opening a COOKIE File

The COOKIE file type is primarily associated with Internet Explorer.

COOKIE	File extension: COOKIE
	File type:	cookie data file

What is a COOKIE file?

COOKIE files mostly belong to Internet Explorer. The COOKIE file is a file used by some web browsers to store website data. It was originally created by Internet Explorer to keep information such as session identifiers, user choices, and small pieces of website data.
Although these files are now deprecated, they might still be found on older systems.
Consider these details:

They often contain text entries or encoded values for website sessions.

The format is simple enough to be viewed with a basic text editor like Notepad, though in some cases a hex editor may be needed if the content is not human readable.

Modern browsers like Chromium use different methods, but the idea is similar: storing data to help websites remember you.

FilExt.com note: For more on the original use of these files, please see the information on the Microsoft website.

How to open a COOKIE file

You need a suitable software like Internet Explorer to open a COOKIE file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your COOKIE file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a COOKIE file directly in the browser:. Just drag the file onto this browser window and drop it.

Online COOKIE Text Viewer

Choose your .cookie file to analyze

or drag and drop it here

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Programs that open and convert COOKIE files:

Internet Explorer
See the previous paragraphs to learn more about the main application. COOKIE files are often referred to as Internet Explorer data files because this type of file is primarily created or used by this software.
Bitcoin Core (RPC Cookie file) by Bitcoin Core Developers
A COOKIE file is created for authentication by Bitcoin Core, which is an open-source software that functions as a node for the Bitcoin cryptocurrency and also provides a Bitcoin wallet. It is an RPC Cookie file, which is created by default in case no -rpcpassword is specified in bitcoind. The file is stored in the data directory by default, but its location can be changed using -rpccookiefile. The COOKIE file extension is also used by Internet Explorer to store cookies, along with DAT files. It replaced the earlier format of cookies in Internet Explorer. They were previously stored as TXT files.

COOKIE file format:

If you can determine the file format, the associated program can also be determined. The file format can be deduced from the file extension and the signature. Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. If there are problems opening a file, you must first determine the file format used. Below is our analysis of the COOKIE files:

COOKIE is not a common file extension and includes various formats for various programs. The following file formats are most commonly found in COOKIE files:

35% of all COOKIE files start with the bytes Cookies are no longer stored in files. Please use, which are crucial for this file format. The content consists of readable text data, which can be read using a text editor. The files are often between 91 bytes and 100 bytes in size. The file type was developed only in the last few years. Several words can almost always be found in the files, e.g. Cookies are no longer stored in files. Please use Internet*Cookie* APIs to access cookies. An example of a file name is deprecated.cookie.
10% of all COOKIE files start with the bytes 80 04 95 crucial for this file format. The contents of these files are partially readable by a human. COOKIE files can be up to 2 KB in size, but are often around 240 bytes - 1 KB. Certain words are almost always found in the files, such as domain, expiry, httpOnly, name, path, sameSite, secure, value, .tiktok.com, sessionid, tt-target-idc and useast2a. Files like these are about session and tiktok.

All other COOKIE files (55%) have no consistent format, often, for example, config. You can get all the details of your COOKIE file by dragging it onto this page or by clicking the button "Choose your .cookie file to analyze" above.

Technical Data for COOKIE File Extension

File classification:

Data

Related files:

cookies, txt, ini, dat, sqlite, json

a cookie cookie data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with COOKIE files

Associate the COOKIE file extension with the correct application.
Update your software that should actually open cookie data files. Because only the current version supports the latest COOKIE file format. Search, therefore, e.g. on the manufacturer website after an available Internet Explorer update.
To make sure that your COOKIE file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .COOKIE file online - secure, fast, and no downloads needed.