Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.PICKLE
File Type
Pickle Data
Category
Data
Best first step
Use compatible software
Quick Summary
A practical overview of the .pickle file format
Pickle is a Python-specific file format used for serializing and de-serializing Python object structures. It allows you to save the state of Python objects (like lists, dictionaries, custom classes, and even functions) to a file, and then later load them back into memory, restoring the objects to t…
File extension
.PICKLE
File type
Pickle Data
Category
Data
Recommended action
Open with a trusted compatible app
How to open a .pickle file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .pickle.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .pickle file?
File extension details and usage information
Pickle is a Python-specific file format used for serializing and de-serializing Python object structures. It allows you to save the state of Python objects (like lists, dictionaries, custom classes, and even functions) to a file, and then later load them back into memory, restoring the objects to their original state. This is particularly useful for tasks like caching results of expensive computations, saving machine learning models, or persisting game states. The pickle format is binary, meaning it's not human-readable. It's important to note that pickle files can be a security risk if you load them from untrusted sources, as they can execute arbitrary code. Therefore, it's crucial to only unpickle data from sources you trust. The pickle module provides functions like pickle.dump() to serialize objects to a file and pickle.load() to deserialize objects from a file. Different pickle protocols exist, offering varying levels of efficiency and compatibility. The latest protocols are generally more efficient but may not be compatible with older Python versions.
Software Compatibility
Programs that may open or work with .pickle files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .pickle files be converted?
Options for saving or exporting this file to another format
In many cases, a .pickle file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .pickle file.
Why can't I open a .pickle file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .pickle format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .pickle files
To open a .pickle file, use software that supports this file format.
- Python (with the pickle module)
- Any IDE supporting Python (e.g., VS Code, PyCharm)
- Termux (with Python installed)
- QPython (Android)
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .pickle file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.