.tar — Tape Archive
AT&T Bell Labs · 1979
TAR (Tape Archive) is a Unix-originated format that bundles multiple files and directories into a single archive file without compression.
Key Features
- Lossless storage behavior for typical archive workflows
- Common MIME type: application/x-tar
- Recognizable file signature: 75 73 74 61 72 (ustar) at offset 257
- Associated with AT&T Bell Labs
Best For
- Packaging files for download
- Backups and transfers
- Reducing storage overhead
Less Ideal For
- Direct viewing without extraction
- Live editing inside the package
- Formats requiring immediate preview
Common Use Cases
- Bundling many files together
- Reducing transfer size
- Preserving directory structure during sharing
How to Open It
- On Windows, open the file with 7-Zip or WinRAR.
- On macOS, open the file with Archive Utility or The Unarchiver.
- On Linux, open the file with tar command.
- If the file does not open, confirm that the extension really matches .tar and that the download or transfer completed without corruption.
What is a .tar file?
TAR (Tape Archive) is a Unix-originated format that bundles multiple files and directories into a single archive file without compression. TAR files preserve Unix file permissions, ownership, and directory structure. They are commonly combined with compression programs to create .tar.gz (gzip), .tar.bz2 (bzip2), or .tar.xz (xz) archives, which are the standard distribution format for Linux software and source code.
Programs That Open .tar Files
| Platform | Program | ||
|---|---|---|---|
| Windows | 7-Zip | Free | |
| WinRAR | Paid | ||
| macOS | Archive Utility | Free | Official |
| The Unarchiver | Free | ||
| Linux | tar command | Free | Official |
Common Problems with .tar Files
Frequently Asked Questions
.tar files can be opened with several programs. 7-Zip is one of the most popular choices.
Generally yes, .tar files are safe to open with appropriate software.
Yes, there are many online and offline tools available to convert .tar files. Check the conversion section above for specific methods.
Technical Details
Tape Archive files use the application/x-tar MIME type and were first introduced in 1979 by AT&T Bell Labs. The file can be identified by its signature: 75 73 74 61 72 (ustar) at offset 257.