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Lock PDF
Password protect and encrypt your PDF online — LockPDF is a free online tool to encrypt and lock PDF files
verified Jul 13, 2026 · HTTP 200
CohortClass of 2018What it is
Password protect and encrypt your PDF online — LockPDF is a free online tool to encrypt and lock PDF files. Password protect your PDF's with a strong encryption in just a few seconds. [Productivity]
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 — liveAlive · 200 OK
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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