Add your AR file
Drop one or more .ar files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
AR to TAR.GZ
Repacking a .ar archive as .tar.gz moves the same files into a container with different compression and compatibility trade-offs. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop AR files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting Unix ar archive to Gzipped TAR archive
Repacking a .ar archive as .tar.gz moves the same files into a container with different compression and compatibility trade-offs. An .ar file is a Unix `ar` archive — the oldest archive format still in everyday use, and about as simple as an archive can be: a seven-byte signature followed by 60-byte plain-text headers each introducing one member. Static libraries (.a) and Debian packages (.deb) are both ar archives.
A .tar.gz file is a tarball that has then been run through gzip: tar supplies the multi-file bundling and Unix metadata, gzip supplies the compression. This two-layer pairing is the default distribution format of the open-source world. For this route the practical draw is solid-style compression across the whole file set and full Unix metadata preservation through the tar layer — balanced against no random access to individual members, which is worth knowing before you commit a large batch.
Why convert AR to TAR.GZ?
The practical trigger for this conversion is usually a mismatch: with .ar, no compression at all, so archives are the sum of their members. Switching to .tar.gz buys you solid-style compression across the whole file set, which is why it is the better fit for source releases — nearly every GitHub release tarball. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
AR vs TAR.GZ at a glance
| Aspect | Unix ar archive (.ar) | Gzipped TAR archive (.tar.gz) |
|---|---|---|
| Format type | Container — quality depends on the codecs and settings inside | Container — quality depends on the codecs and settings inside |
| How it stores data | the file begins with the eight-byte string `!<arch>` followed by a newline | compression applies to the tar stream as a whole — effectively solid compression, beating ZIP's per-file approach on collections of small similar files |
| Strongest at | opening a Debian package's outer container without dpkg | source releases — nearly every GitHub release tarball |
| Weak spot | no compression at all, so archives are the sum of their members | no random access to individual members |
| Metadata | the header's mode, ownership and timestamp fields are read; ZIP output preserves names and sizes | ownership, permission modes, and timestamps come from the inner tar layer; the gzip wrapper contributes only its own optional filename and mtime fields |
Pick TAR.GZ as the output
Select .tar.gz in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if TAR.GZ is selectable, the route is real and validated.
Convert on your device
Press Convert. Extraction and repacking use WebAssembly builds of real archive engines (libarchive and fflate) running in your browser.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid TAR.GZ file. Outputs keep the original filename with the .tar.gz extension.
AR to TAR.GZ questions, answered
Will converting AR to TAR.GZ lose quality?
Since ar is container-oriented and tar.gz is container-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .tar.gz itself requires.
Is it private to convert AR files here?
Yes — the .ar file is processed inside your browser tab and never uploaded. Extraction and repacking use WebAssembly builds of real archive engines (libarchive and fflate) running in your browser. Close the tab and the file is gone from memory.
Where will the TAR.GZ file work?
One command — tar -xzf — unpacks it on any Linux or macOS box, Windows 10+ includes bsdtar for the same job, and recent Windows 11 builds open tarballs from File Explorer. GUI archivers on all platforms recognize both the .tar.gz and .tgz spellings.
Will the TAR.GZ file be bigger or smaller than my AR?
It depends on the content: compression applies to the tar stream as a whole — effectively solid compression, beating ZIP's per-file approach on collections of small similar files. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my AR file?
In .ar, the header's mode, ownership and timestamp fields are read; ZIP output preserves names and sizes. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.