Unpack a zstandard-compressed tarball — .tar.zst and .tzst — in one step, all in your browser. No command line, no updating your archive tool.
.tar.zst or .tzst file onto the box above, or click to choose it..zip.A .tar.zst bundles files with tar and compresses them with Zstandard — fast to make, very fast to open. It has become the default for Arch Linux packages, shows up in Docker and container layers, and is spreading through modern backup tooling. Older archive managers often can't read it yet. This tool handles zstd natively: powered by libarchive compiled to WebAssembly, it decompresses the zstd stream and unpacks the tar in a single step.
No need to run zstd -d to get a .tar and then open that separately. Here it's automatic — and the same page handles .tar.gz, .tar.xz and .tar.bz2, since the compression is detected from the file contents, not the file name.
Yes. There is no upload step and no account. Open your browser's network tab and watch: no request carries your file data. The tool works offline once the page has loaded.
There's no artificial cap. The tarball is unpacked in memory, so the real limit is your device's available RAM.