Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.TMP
File Type
Temporary File
Category
Data
Best first step
Use compatible software
Quick Summary
A practical overview of the .tmp file format
A .tmp file is a generic temporary file created by various programs and operating systems. These files are used to hold data temporarily while a file is being created, modified, or transferred. The purpose is to prevent data loss in case of a system crash or application error. For example, a word p…
File extension
.TMP
File type
Temporary File
Category
Data
Recommended action
Open with a trusted compatible app
How to open a .tmp file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .tmp.
- 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- Update the application if the file was created by a newer version of the software.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 .tmp file?
File extension details and usage information
A .tmp file is a generic temporary file created by various programs and operating systems. These files are used to hold data temporarily while a file is being created, modified, or transferred. The purpose is to prevent data loss in case of a system crash or application error. For example, a word processor might create a .tmp file while you are editing a document. If the application crashes before you save, the .tmp file might contain some or all of your unsaved work, allowing you to recover it. Similarly, operating systems use .tmp files during software installations or updates. These files are usually deleted automatically when the process is completed successfully. However, sometimes they are left behind due to errors or incomplete processes. It's generally safe to delete .tmp files if you are sure that no programs are currently using them, but it's always a good idea to close all running applications before deleting them to avoid potential data loss or system instability. Identifying the program that created a specific .tmp file can be difficult without further information, such as the file's creation date and time, or its location within the file system.
Software Compatibility
Programs that may open or work with .tmp files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .tmp files be converted?
Options for saving or exporting this file to another format
In many cases, a .tmp 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 .tmp file.
Why can't I open a .tmp file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .tmp 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 .tmp files
To open a .tmp file, use software that supports this file format.
- Any text editor (Notepad, Notepad++, VS Code)
- Any hex editor
- Operating System (Windows Explorer)
- Any text editor (TextEdit, VS Code)
- Operating System (Finder)
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 .tmp 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.