ZST — Zstandard Single File
A text file compressed with Zstandard (.zst) — the container-free codec on its own — for testing zstd decompression and codec detection.
zst
Single-file zstandard stream
- Contains
- sample.txt
- Codec
- zstandard
- Uncompressed
- 960 B
- Compressed
- 168 B
A container-free zstandard stream — decompress it to recover sample.txt. The bytes are the compressed data, so there is no inline content preview.
Specifications
- Format
- Zstandard (single file)
- Codec
- zstandard
- Original Name
- sample.txt
- Original Bytes
- 960
- Level
- 10
What is a .zst file?
Zstandard (.zst) is a modern, fast lossless compressor offering high ratios with very fast decompression and tunable levels. It is widely used in package managers, filesystems, and data pipelines.
How to use this file
Use an example .zst file to test Zstandard decompressors, streaming decode, and zstd-to-gzip re-compression.
How to use this file for testing
“ZST — Zstandard Single File” is a deterministic Novus Examples fixture for Compression testing, Conversion testing. The same source saved at quality 10/50/90 for comparing compression artefacts and quality settings.
Documented properties for this file: Zstandard (single file). Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
Archive fixtures are documented down to their member list (shown on this page) and are deliberately safe — no zip bombs, executables, or hidden payloads. Test extractors against nested, unicode, empty, and encrypted variants.
Related files
- lz4LZ4 — Single FileA text file compressed with the LZ4 frame format (.lz4) — the container-free codec on its own — for testing LZ4 decompression and codec detection.
- zipConvert v2 Archive-Media ZIP ControlExisting-format ZIP/TXT media control combining a plain README and a WebVTT sidecar for nested media extraction checks Stable P8 artifact p8-convert-legacy-archive-media-control.
- cabConvert v2 CAB Stored ControlValid single-file Microsoft Cabinet using uncompressed CFDATA for bounded legacy extraction tests Stable P8 artifact p8-convert-legacy-cab.
- tar.bz2Convert v2 Canonical TAR.BZ2Canonical compound-suffix source for the same deterministic bzip2-compressed TAR member set Stable P8 artifact p8-convert-tar-bz2.
- tar.xzConvert v2 Canonical TAR.XZCanonical compound-suffix source for the same deterministic XZ-compressed TAR member set Stable P8 artifact p8-convert-tar-xz.
- rarConvert v2 RAR4 Stored ControlValid RAR4 archive with two stored members and fixed metadata for legacy extraction tests Stable P8 artifact p8-convert-legacy-rar.
Generated by generation/q8_extras.py. Free for any use, no attribution required — license.