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PastPage
PastPage is a browser extension that automates the process of checking for archived versions of URLs
verified Jul 11, 2026 · HTTP 200
CohortClass of 2026What it is
PastPage is a browser extension that automates the process of checking for archived versions of URLs. It helps with 404 errors and provides great privacy practices. The extension is free and open-source.
HTTP liveness
1 probe since Jul 11Jul 11Jul 11
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jul 11, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
302/4 signal families
Liveness40%0.76
Press30%no data
GitHub20%no data
Tranco10%no data
Weighted observed activity · updated Jul 12
GitHub activitydaily 04:15 UTC
Last commit
2d ago
Last release
1mo ago
Open PRs
0
Open issues
1
Contributors 30d
1
Closed 30d
0
Cohort survival · Class of 2026weekly
508 products launched in 2026 · 100% still active
508 active0 sunset
Still active
100%
Median lifespan
4.9y