TAR → 7Z
Repacks TAR into 7z (LZMA), adding a compression layer to plain archives to reduce server backup storage.
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How to convert TAR to 7Z
- 1Upload your TAR file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted 7Z file.
About TAR to 7Z conversion
TAR is a Unix tape archive format introduced in 1979. It only bundles files without compression, and is typically used with gzip or bzip2 to achieve compression. It preserves Unix file permissions and symbolic links, and is the standard format for Linux software distribution. 7Z is an archive format from 7-Zip introduced in 1999, which uses the LZMA/LZMA2 algorithm to achieve high compression ratio. This conversion converts a single bundled archive into a high-compression archive.
This conversion uses the 7-Zip engine for processing. 7Z uses the LZMA2 compression algorithm, which generally offers a better compression ratio than TAR with gzip. After conversion, the directory structure of the original archive is preserved, but Unix file permission information is not retained. The generated 7Z file is smaller than the original compressed TAR file.
This conversion is suitable for scenarios that require reducing archive size and storing/distributing files on Windows devices. Windows does not natively support extracting 7Z files, so users need to install 7-Zip software to complete extraction. The conversion must comply with this site's archive security processing limit requirements.
TAR vs 7Z: technical comparison
| Feature | TAR | 7Z |
|---|---|---|
| Released | 1979 | 1999 |
| Developer | AT&T Bell Labs | Igor Pavlov |
FAQ about TAR → 7Z
Does quality change after conversion?
Conversion does not change the quality of the original files inside the archive. It only modifies the storage method of the outer archive. 7Z recompresses the content to obtain a smaller overall archive size without damaging the internal files.
Will original TAR permissions be preserved?
The Unix file permission information carried in the original TAR will not be preserved. The 7Z format does not natively store this type of Unix permission attribute. The conversion completely preserves the directory structure and file content of the original archive.
What file size is supported?
This site has a single file conversion limit of 50MB. It also limits the total extracted size to no more than 256MB, and the total number of files to no more than 1000. Processing will be rejected if limits are exceeded.
Will files be stored?
Files are uploaded to the server via HTTPS for conversion. After conversion is completed, the server immediately deletes both the source file and the output file, and does not store any files.