CONVERT TGZ → GZ (TGZ to GZ)
Fast, secure TGZ to GZ conversion. No registration required.
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HOW TO CONVERT TGZ → GZ
Provide the TGZ
Drag-and-drop the archive or pick it from your computer. We accept up to 25 MB on the free tier.
Stream-convert
The TGZ is decompressed and re-compressed into GZ in a single pipeline stage — no temporary extracted folder.
Retrieve the output
Click to download the GZ. File structure, timestamps and permissions match the original exactly.
Situation. TGZ is a compression/archive format used to package or shrink files. Solution: a GZ, produced below. A TGZ to GZ job switches archive containers. The contents do not change — the same files, directories and metadata end up inside a GZ instead of a TGZ, often because the destination system reads one format but not the other, or because a GZ is smaller on disk. Worth knowing: TGZ is a compression/archive format used to package or shrink files. Meanwhile GZ is the gzip DEFLATE compression format, typically wrapped around TAR for Unix distributions.
Why convert TGZ to GZ
A GZ often compresses the same content smaller than a TGZ at the same strength setting, thanks to more modern codecs. For distribution over bandwidth-limited channels — email, chat apps, CDN delivery — the size difference matters.
TGZ vs GZ — Technical specifications
Side-by-side comparison of the technical details.
TGZ
- MIME type
- application/gzip
- Extensions
- .tgz, .tar.gz
- Container
- TAR (POSIX) + gzip (DEFLATE)
- Alternative
- .tar.xz (better ratio), .tar.zst (faster)
- MIME Type
- application/gzip
- Extension
- .tgz
- Category
- Archives & Compressed
- Full Name
- Tarball (gzipped)
- Conversion Engine
- ARCHIVE
GZ
- MIME type
- application/gzip
- Extensions
- .gz, .tgz (with tar)
- MIME Type
- application/gzip
- Extension
- .gz
- Category
- Archives & Compressed
- Full Name
- Gzip Compressed
- Conversion Engine
- ARCHIVE
- Algorithm
- DEFLATE (LZ77 + Huffman coding)
- Standard
- RFC 1952 (gzip), RFC 1951 (DEFLATE)
- Header
- 10 bytes: magic, method, flags, mtime, extra, filename, comment, crc, isize
| Specification | TGZ | GZ |
|---|---|---|
| MIME type | application/gzip | application/gzip |
| Extensions | .tgz, .tar.gz | .gz, .tgz (with tar) |
| Container | TAR (POSIX) + gzip (DEFLATE) | — |
| Alternative | .tar.xz (better ratio), .tar.zst (faster) | — |
| MIME Type | application/gzip | application/gzip |
| Extension | .tgz | .gz |
| Category | Archives & Compressed | Archives & Compressed |
| Full Name | Tarball (gzipped) | Gzip Compressed |
| Conversion Engine | ARCHIVE | ARCHIVE |
| Algorithm | — | DEFLATE (LZ77 + Huffman coding) |
| Standard | — | RFC 1952 (gzip), RFC 1951 (DEFLATE) |
| Header | — | 10 bytes: magic, method, flags, mtime, extra, filename, comment, crc, isize |
TGZ vs GZ — Strengths and limitations
What each format does best, and where it falls short.
TGZ Strengths
- Universal Unix/Linux compatibility.
- Decades of tool and process maturity.
- Fast decompression (zlib).
- Streamable via pipes.
Limitations
- Compression ratio lags xz, zstd, brotli.
- No random access — must extract sequentially.
- Windows tooling less native than on Unix.
GZ Strengths
- Patent-free, royalty-free — that was the whole point in 1992.
- Universally supported on every OS.
- Fast compression and extremely fast decompression.
- Preserves original timestamps and filenames in the header.
- Streamable — can compress/decompress over pipes.
Limitations
- Compresses one file at a time — needs tar for multi-file archives.
- Older algorithm — Zstandard, xz, and brotli all beat it on ratio.
- Single-threaded in the reference implementation (pigz fixes this).
Quality & Compatibility
Compressed size can go up or down between TGZ and GZ depending on the codec and the level — modern LZMA2/Zstd usually beats older Deflate on text, while already-compressed content (images, video) changes little. We default to a balanced level; Advanced options expose the full range.
Tips for Best Results
- If the TGZ is password-protected, we will ask for the password during upload; the resulting GZ is emitted with encryption too if the format supports it.
- When the GZ has to fit a strict upload cap, split into multi-volume archives in Advanced — several smaller GZ parts are often accepted where a single large one is rejected.
- For distribution bundles, include a short README at the root of the GZ so recipients know what the archive contains without extracting it.
Frequently Asked Questions
Yes. The free tier accepts files up to 25 MB without registration, email capture or watermarks; paid plans go up to 2 GB. Paid plans raise the size cap, enable batch conversions and provide a REST API for automation, but nothing on the free tier is quality-limited — the output is exactly the same as on any paid plan.
Yes — because TGZ and GZ use different compression codecs, every entry is decompressed from the TGZ and re-compressed for the GZ. The uncompressed data is identical on both sides, and the re-compression happens entirely inside our processing container.
Uploads run over HTTPS, files are processed in isolated containers, and both the source TGZ and the GZ output are auto-deleted within two hours. No account is required, file contents are never logged, and KaijuConverter does not use uploads for AI training. The paid plan adds a signable data-processing agreement for regulated workflows.
Usually yes, modestly, when the original TGZ used an older codec like Deflate. Against modern LZMA2 / Zstd GZ containers expect 10-30% savings on mixed content and almost no change on pre-compressed payloads. Advanced → compression level lets you trade speed for ratio.
Most files finish in well under a minute. Small images and documents are typically ready in a few seconds; large video or audio files scale roughly with duration. Upload speed from your network is usually the dominant factor, not server time.
Yes. Provide the password during upload; we use it only to decrypt inside the processing container and never log or persist it. The resulting GZ can be re-encrypted with a password of your choice (AES where the target format supports it).
Tarball (gzipped)
Source formatTGZ is a tar archive compressed with gzip, standard for Unix/Linux distribution.
Gzip Compressed
Target formatGzip is a single-file compression format based on the DEFLATE algorithm. It is most commonly paired with TAR to create .tar.gz archives and is the standard compression for web content delivery.
Common Use Cases
Share across platforms
Send GZ files to anyone without worrying about whether they have the right software for TGZ.
Embed in documents
Drop GZ output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
GZ often produces smaller files than TGZ for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
TGZ vs GZ — Typical file sizes
Approximate file sizes for common scenarios.
- Source code archive 15-30% of original
- Linux kernel source (.tar.gz) ~200 MB
- Plain text file 25-40% of original
- HTML page 20-30% of original
- Source code archive 15-30% of original
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Related comparisons
See these formats side by side to understand which fits your use case best.
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Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 60 minutes. We never read, share, or store your data.