Reading your connection details…
Location
Network
Device
Request headers
Captured
Password generator
Strong random passwords, passphrases and PINs — made in your browser, nothing is sent anywhere.
WHOIS & DNS lookup
Check registration details and DNS records for any domain or IP.
SSL / TLS certificate checker
Inspect a site's certificate — chain, issuer, SANs, expiry, and negotiated TLS.
CSR decoder
Paste a Certificate Signing Request to read its subject, key and SANs — parsed locally, never uploaded.
Certificate decoder
Paste a PEM certificate to read its subject, issuer, validity, key and extensions — parsed locally, never uploaded.
Blacklist / reputation check
Check an IPv4 address against the DNS blacklists mail servers rely on, plus a Cisco Talos link.
Mail auth check
Check a domain's SPF, DKIM and DMARC records and flag misconfigurations. DKIM probes common selectors — add yours if you know it.
Connection speed
Test your download, upload, latency, and jitter.
Subnet / CIDR calculator
IPv4 network breakdown — mask, range, and host counts.
Hash & encoding toolbox
SHA, Base64, URL, JWT decode, UUID — computed locally, nothing leaves your browser.
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