Inspect the real TLS certificate chain of every site against your regex patterns; flag matches on the toolbar icon.
Users
13
+1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#183K
#153K among extensions
Version
0.3.0
updated 7 Jul 2026
Users
monthly, 4 months
Latest, 21 Oct 2026:13 usersMove the mouse over the chart for any month
Ratings count
monthly, 4 months
Latest, 21 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About ChainGuard
ChainGuard is a Chrome extension that passively reads the certificate of each
site you visit, checks it against regex patterns you define, and flags matches
on the toolbar icon, plus optional desktop notifications and a searchable
history of everything it scanned. Everything runs locally.
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