Chrome extension

Inspect TLS certificates for the site in your active tab — validity, names, issuer, and technical fields — plus an optional toolbar countdown and links to external SSL tools.

Who it’s for

Built for developers, system administrators, and anyone who regularly deals with HTTPS and wants certificate metadata without digging through DevTools. It’s a small helper, not a replacement for enterprise PKI or monitoring stacks.

Features

• Certificate panel — validity window, subject / SANs, issuer, deployment hints, fingerprints, serial, signature algorithm.
• Toolbar badge — days remaining until expiry, with colour bands you can tune in Settings.
• Settings — urgency thresholds (critical vs. expiring soon) stored locally via Chrome storage.
• Tools — shortcuts to common external SSL checker sites for deeper tests.
• News — optional TLS/PKI headlines from public RSS feeds (loaded only when you open that view).

Screenshots