How do I open a .TZST file?

Drop a .TZST file onto Analyser at https://lab.valjdakosta.com/ and it is identified directly in your browser - no upload, no account and no software to install. Open more archives, packages and installers: macOS XAR/.pkg/.mpkg installers (member list), Windows .msu updates (CAB), Snap SquashFS packages, Flatpak bundles, StuffIt (.sit/.sitx), lzop (.lzo) and Brotli (.br) streams, Java Web Start (.jnlp), and the .tlz/.tbz/.tz compressed-tarball shorthands.

Can I open a .TZST file online for free?

Yes. Analyser is a free online .TZST identifier that runs entirely in your browser - your .TZST file never leaves your device, so there is nothing to upload and no software to install. It even works offline once installed.

.TZST file - what it is and how to identify it online

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Home › Formats › .TZSTID

What is a .TZST file?

TZST is a tar archive compressed with Zstandard - shorthand for a .tar.zst, increasingly used by Linux package managers for its speed.

Did you know: Arch Linux switched its packages to .tzst because Zstandard decompresses far faster than XZ while staying nearly as small.
Analyser handles .TZST alongside related formats such as .XAR, .PKG, .MPKG and more.
In Analyser's format library, .TZST sits in the Archives category.
What Analyser reads: Open more archives, packages and installers: macOS XAR/.pkg/.mpkg installers (member list), Windows .msu updates (CAB), Snap SquashFS packages, Flatpak bundles, StuffIt (.sit/.sitx), lzop (.lzo) and Brotli (.br) streams, Java Web Start (.jnlp), and the .tlz/.tbz/.tz compressed-tarball shorthands.
Depth of analysis: .TZST is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
Open a .TZST file: Drag a .TZST file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.
Related formats: .XAR · .PKG · .MPKG · .MSU · .SNAP · .Flatpak · .SIT · .SITX · .LZO · .BR · .JNLP · .TLZ · .TBZ · .TZ · .TXZ. See all supported file types.