Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.CACHE
File Type
Cache File
Category
Data
Best first step
Use compatible software
Quick Summary
A practical overview of the .cache file format
A cache file is a generic data container used by a wide variety of software applications to store temporary information intended to speed up future requests for that data. The fundamental purpose of a cache file is to improve system performance and responsiveness by keeping a local copy of data tha…
File extension
.CACHE
File type
Cache File
Category
Data
Recommended action
Open with a trusted compatible app
How to open a .cache file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .cache.
- 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- Update the application if the file was created by a newer version of the software.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 .cache file?
File extension details and usage information
A cache file is a generic data container used by a wide variety of software applications to store temporary information intended to speed up future requests for that data. The fundamental purpose of a cache file is to improve system performance and responsiveness by keeping a local copy of data that was either expensive to compute or slow to fetch from a primary source, such as a remote web server or a mechanical hard drive. Because these files are generated by specific programs, their internal structure is usually proprietary and not standardized; for instance, a web browser's cache might store fragments of HTML, CSS, and images, while a video editing suite might store rendered preview frames. In most cases, cache files are not meant to be opened or edited manually by the end-user. They are typically stored in hidden system directories and can generally be deleted without losing critical user data, as the parent application will simply recreate the file the next time the data is required, though this may result in a temporary performance lag during the regeneration process.
Software Compatibility
Programs that may open or work with .cache files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .cache files be converted?
Options for saving or exporting this file to another format
In many cases, a .cache 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 .cache file.
Why can't I open a .cache file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .cache 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 .cache files
To open a .cache file, use software that supports this file format.
- CCleaner
- File Viewer Plus
- Notepad++
- Google Chrome
- Mozilla Firefox
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 .cache 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.