Convert TAR.GZ to TGZ — Free Online Converter

TAR.GZ and TGZ are the exact same format — a gzip-compressed tar archive. The only difference is the filename extension: .tar.gz (compound extension) versus .tgz (single extension). This conversion renames the archive from the .tar.gz convention to the .tgz convention used by Slackware Linux packages, Helm charts, and systems that prefer single-extension filenames.

While a simple rename would technically suffice, the conversion validates the archive structure, verifies the gzip CRC32 integrity, and produces a confirmed-valid .tgz output. This is useful in automated pipelines where validation alongside renaming adds a safety check before deployment.

Several critical systems require the .tgz extension specifically. Slackware's installpkg tool checks the file extension to determine package format — .tar.gz is not recognized as a valid Slackware package, but .tgz is. Helm's chart packaging specification uses .tgz as the standard extension. Some automated build systems glob for *.tgz and would miss .tar.gz files.

In automated pipelines, explicitly converting (rather than just renaming) adds a validation step that confirms the archive is a valid gzip-compressed tar. This catches corrupted downloads, incomplete transfers, and format mismatches before they reach deployment tools that might fail silently or produce confusing errors.

The .tar.gz file is read, the gzip header is validated (magic bytes 1f8b, compression method 08), and the compressed data stream is verified against the CRC32 checksum in the gzip trailer. The file is then output with the .tgz extension. Since .tar.gz and .tgz are structurally identical, no data transformation occurs — the conversion is effectively a validated rename. The output is byte-for-byte identical to the input, differing only in filename.