TAR vs TGZ
A detailed comparison of TAR Archive and Tarball (gzipped) — file size, quality, compatibility, and which format to choose for your workflow.
TAR Archive
Archives & CompressedTAR is a Unix archive format that bundles files together without compression. It is commonly combined with gzip or bzip2 for compressed archives and is the standard for Linux software distribution.
About TAR filesTarball (gzipped)
Archives & CompressedTGZ is a tar archive compressed with gzip, standard for Unix/Linux distribution.
About TGZ filesStrengths Comparison
TAR Strengths
- Streamable — you can tar files straight to a network pipe, no seek needed.
- Preserves Unix permissions, ownership, symbolic links, and timestamps.
- Universally supported on Unix-like systems.
- Simple format — the GNU tar source has been stable for decades.
- No compression overhead — pair with gzip/xz/zstd as needed.
TGZ Strengths
- Universal Unix/Linux compatibility.
- Decades of tool and process maturity.
- Fast decompression (zlib).
- Streamable via pipes.
Limitations
TAR Limitations
- No built-in compression — plain .tar files are the same size as their contents.
- No random access — reading one file requires scanning from the start.
- Windows tooling is second-class — PowerShell only added native tar in 2018.
- Multiple incompatible header variants (v7, ustar, POSIX, GNU) over the years.
TGZ Limitations
- Compression ratio lags xz, zstd, brotli.
- No random access — must extract sequentially.
- Windows tooling less native than on Unix.
Technical Specifications
| Specification | TAR | TGZ |
|---|---|---|
| MIME type | application/x-tar | application/gzip |
| Extension | .tar | — |
| Block size | 512 bytes (traditional) | — |
| Header variants | v7, ustar, POSIX.1-2001 (pax), GNU | — |
| Max filename length | 100 bytes (v7); unlimited (pax extended headers) | — |
| Extensions | — | .tgz, .tar.gz |
| Container | — | TAR (POSIX) + gzip (DEFLATE) |
| Alternative | — | .tar.xz (better ratio), .tar.zst (faster) |
Typical File Sizes
TAR
- 1 MB of source files (uncompressed .tar) ~1 MB
- Same files as .tar.gz 150-400 KB
- Linux kernel source (.tar.xz) ~120 MB
TGZ
- Source code archive 15-30% of original
- Linux kernel source (.tar.gz) ~200 MB
Ready to convert?
Convert between TAR and TGZ online, free, and without installing anything. Encrypted upload, automatic deletion after 2 hours.
Frequently Asked Questions
TAR (TAR Archive) is an archive format used to bundle multiple files and folders into a single compressed file. The archive preserves the directory structure and typically reduces total size via compression. TAR sits in the archives & compressed family and has specific strengths around compression ratio, speed, or platform support.
TGZ (Tarball (gzipped)) is an archive format used to bundle multiple files and folders into a single compressed file. The archive preserves the directory structure and typically reduces total size via compression. TGZ sits in the archives & compressed family and has specific strengths around compression ratio, speed, or platform support.
7-Zip, WinRAR, The Unarchiver (macOS), and the built-in archive utilities on Windows and macOS open most TAR files. For command-line extraction, 7z, unar, or the format-specific tool handles TAR cleanly. If your extractor does not recognise TAR, convert to ZIP first — ZIP opens on every operating system without extra software.
7-Zip, WinRAR, The Unarchiver (macOS), and the built-in archive utilities on Windows and macOS open most TGZ files. For command-line extraction, 7z, unar, or the format-specific tool handles TGZ cleanly. If your extractor does not recognise TGZ, convert to ZIP first — ZIP opens on every operating system without extra software.
Upload the TAR to KaijuConverter and pick ZIP, 7Z, TAR.GZ, or RAR as the target. Our pipeline extracts the original archive and re-compresses the contents into the target format. File permissions, timestamps, and directory structure are preserved where both formats support them.
Depends on the goal. ZIP is the universal baseline — every OS extracts it out of the box. Formats like 7Z or TAR.GZ compress better but require specific tools. TAR may win on compression ratio, password support, or OS integration for specific workflows; ZIP wins on raw compatibility.