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ZStandard
A fast real-time compression algorithm by Facebook — Zstandard, or zstd as short version, is a fast lossless compression algorithm, targeting real-time compression scenarios at zlib-level and better compression ratios
since Jun 11, 2026 · HTTP 200
CohortClass of 2018What it is
A fast real-time compression algorithm by Facebook — Zstandard, or zstd as short version, is a fast lossless compression algorithm, targeting real-time compression scenarios at zlib-level and better compression ratios. It's backed by a very fast entropy stage, provided by Huff0 and FSE library. [API, Open Source, Social Network]
HTTP liveness
15 probes since Jun 11Jun 11Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 11, 2026First probe — redirectedRedirected offsite
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Pulse Indexobserved activity
15 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2018weekly
2,435 products launched in 2018 · 100% still active
2,425 active10 sunset
Still active
100%
Median lifespan
4.9y