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Upload your .tar file by dragging it into the upload area or clicking to browse.

Choose your output settings. The default settings work great for most files.

Click Convert and download your .gz file when it's ready.

Om konvertering fra TAR til GZ

TAR bundles files and directories into a single uncompressed stream, preserving Unix metadata including permissions, ownership, and symlinks. GZ (Gzip) applies DEFLATE compression to a single data stream. The combination of TAR + GZ produces the ubiquitous .tar.gz format — the standard for source distribution on Unix/Linux systems.

Converting TAR to GZ compresses your uncompressed tar archive with gzip, producing the .tar.gz (or equivalently .tgz) format that every Unix system can extract natively. This is the most common archive compression operation in the Unix world — it takes a raw file bundle and makes it practical for storage and transfer.

Hvorfor konvertere TAR til GZ?

Plain TAR files are impractically large for distribution and storage. A source code directory that unpacks to 100 MB as TAR typically compresses to 15-25 MB as .tar.gz. This 75-85% size reduction makes the archive practical for downloading, email attachment, and storage. Virtually every open-source project, Linux distribution, and Unix package system uses .tar.gz as their primary distribution format.

Gzip compression is the fastest standard compression option for tar archives, offering the best balance of speed and compression ratio for everyday use. While bzip2 and xz compress better, gzip decompression is significantly faster — a critical advantage when extracting on CI servers, embedded systems, or any time-sensitive pipeline.

Vanlige bruksområder

Compressing raw tar archives for source code distribution and release packaging
Reducing tar backup sizes for efficient storage on local drives or cloud platforms
Creating .tar.gz packages expected by npm, pip, gem, and other package managers
Preparing compressed deployment artifacts for CI/CD pipeline artifact storage
Making tar archives practical for email attachment or web download distribution

Slik fungerer det

The TAR file is read as a continuous byte stream and piped through the gzip compressor. Gzip applies the DEFLATE algorithm (LZ77 + Huffman coding) with a 32 KB sliding window, processing the tar data sequentially. The output includes a gzip header (magic bytes 1f8b, compression method, timestamp, OS identifier), the DEFLATE-compressed data, and a trailer (CRC32 checksum of the original data plus original size modulo 2^32). Default compression level is 6 (balanced speed/ratio).

Kvalitet og ytelse

Entirely lossless. Gzip compression is mathematically reversible — `gunzip` perfectly reconstructs the original tar stream, verified by the CRC32 checksum. Every file within the tar archive is preserved exactly. The only change is the addition of gzip compression around the existing tar data — no file content is modified.

LIBREOFFICE EngineModerateMinimal Quality Loss

Enhetskompatibilitet

Device	TAR	GZ
Windows PC	Partial	Partial
macOS	Partial	Partial
iPhone/iPad	Partial	Partial
Android	Partial	Partial
Linux	Partial	Partial
Web Browser	No

Tips for best resultat

1Gzip level 6 (default) offers the best speed-to-compression ratio for most use cases — levels 7-9 rarely justify the additional CPU time
2For the fastest possible compression, use level 1 — useful for CI/CD where compression speed matters more than size
3The output .tar.gz can be renamed to .tgz if your target system prefers that extension — the content is identical
4Use `gzip -t file.tar.gz` to verify integrity after compression, especially before deleting the original .tar
5For better compression than gzip with reasonable speed, consider xz instead — it uses LZMA2 and produces significantly smaller archives

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TAR to GZ compression is the foundational operation of Unix archiving, producing the .tar.gz format used by millions of projects. Fast, universally supported, and lossless — it is the default choice for compressing tar archives.

Ofte stilte spørsmål

Typically 60-85% reduction for text content (source code, logs). Binary data compresses less (20-50%). Already-compressed content (images, videos) shows almost no reduction.

Yes, identical format. .tgz is a shorter extension from the 8.3 filename era. All tools handle both extensions interchangeably.

Levels range from 1 (fastest, least compression) to 9 (slowest, best compression). Default is 6. The difference between 6 and 9 is typically only 2-5% smaller output but 2-3x slower.

Yes. bzip2 typically compresses 10-15% better than gzip, and xz (LZMA2) compresses 20-40% better. However, gzip decompresses 2-5x faster, which matters for CI/CD pipelines and build systems.

No. The entire TAR file is compressed as a single stream. When decompressed, the identical TAR byte stream is restored. The tar structure, file entries, and all metadata are unmodified.

Relaterte konverteringer og verktøy

Egenskap	TAR	GZ
Fullt navn	Tape Archive	Gzip Compressed File
Filendelse	.tar	.gz
Best egnet for	Unix permissions	DEFLATE compression

Convert TAR to GZ — Free Online Converter

Slik konverterer du

Om konvertering fra TAR til GZ

Hvorfor konvertere TAR til GZ?

Vanlige bruksområder

Slik fungerer det

Kvalitet og ytelse

Enhetskompatibilitet

Tips for best resultat

Relaterte konverteringer

Ofte stilte spørsmål

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