Convert TGZ to TAR.GZ — Free Online Converter

TGZ and TAR.GZ are the exact same format — a gzip-compressed tar archive. TGZ uses the compact three-character .tgz extension from the 8.3 filename era, while TAR.GZ uses the descriptive compound .tar.gz extension preferred by most Unix conventions. No structural or content difference exists between the two.

Converting TGZ to TAR.GZ renames the archive from the Slackware/Helm/embedded convention to the standard Unix naming convention. While a file rename is technically sufficient, the conversion validates the gzip stream integrity (CRC32 check) and confirms the tar structure, ensuring the output .tar.gz is a verified-valid archive.

Most Unix tools and conventions expect the .tar.gz extension. GitHub release downloads, npm package tarballs, pip source distributions, and Ruby gems all use .tar.gz. Build systems, documentation, and scripts referencing tarballs almost universally cite .tar.gz. Converting .tgz to .tar.gz standardizes the naming to match these mainstream Unix conventions.

Some tools may behave differently with .tgz versus .tar.gz extensions. While rare, MIME type detection, file manager associations, and automated archive handlers may treat the extensions differently on certain platforms. Using the canonical .tar.gz extension eliminates any ambiguity and ensures consistent behavior across all tools.