Extract text from Python cookie jars (JR)
To convert JR cookie jars to another format, you need Python or other Developer software.
To convert other file formats to the "Serialized Data" file type, you need software like Python or a similar tool.
A .jr file is typically a serialized cookie jar generated by the Python Requests library. These files store web session data (cookies) in a binary serialized format, often using the Python pickle module. Developers create them to persist login sessions across different script executions.
Because .jr files are often binary pickles, they cannot be opened in standard text editors like Notepad++ without appearing as garbled text. Furthermore, they are highly specific to the Python version used to create them (e.g., Python 2 vs. Python 3 incompatibility) and pose a security risk if loaded from untrusted sources. To use these cookies in other applications - such as inspecting session data or importing them into web browsers - users typically need to convert the .jr file into a human-readable JSON format or the standard Netscape HTTP Cookie File (cookies.txt) format supported by tools like cURL and wget.
Convert.Guru analyzes your JR file, detects the exact format, and lets you read the text inside.
Users also converted JRN, ZIP, MARKER, SHAPES and BITMAP files.
If you want to convert JR file to , you can use Python or similar software from the "Web Session Storage" category. In the File menu, look for Save As… or Export….
To convert files to JR, try Python or another comparable tool in the "Web Session Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our JR converter.