Look up any TLS cipher suite name — TLS_AES_256_GCM_SHA384, TLS_RSA_WITH_RC4_128_SHA — and get its strength rating from Strong to Insecure, with the reason in plain words. Code never leaves your device — formatting and validation run locally in your browser.
Content reviewed October 2026 · About Toolzum
Check a host over HTTPS from your browser — SSL/TLS reachability (which proves the browser validated the certificate chain) plus public issuance history (issuer, expiry, cert count) via crt.sh. No cipher-suite or protocol-version scan: browsers do not expose handshakes.
Look up domain registration information using public RDAP APIs. Check registrar, expiration date, name servers, and more.
Generate strong yet memorable passwords — word-based passphrases with real entropy. Get correct-horse grade security you can type — local crypto, free, no signup.
Convert between plain text and binary in both directions — encode text into its base-2 representation or decode binary strings back to readable text, byte by byte. Files are converted locally in your browser — nothing is uploaded.
Get document checklists and step-by-step guidance for Indian voter registration forms — Form 6 (new enrollment), Form 7 (objection/deletion of a voter name), and Form 8 (correction, shifting, or replacement EPIC).
TLS 1.3 suites (AES-GCM, ChaCha20) and ECDHE suites with 256-bit keys and AEAD. Perfect forward secrecy plus modern AEAD is the bar — anything without PFS caps at Moderate.
CBC-mode suites in TLS 1.2 and below fall to padding-oracle attacks (Lucky 13 family). The mode, not just the key length, decides the rating.
No — this is a name lookup against a reference table, fully local. To test a live host, use the SSL/TLS Checker with its hostname instead.
Unknown names return an explicit Unknown verdict with a pointer to the IANA TLS registry — never a guessed rating. Proprietary or brand-new suites land here first.
SSL/TLS Checker
Check a host over HTTPS from your browser — SSL/TLS reachability (which proves the browser validated the certificate chain) plus public issuance history (issuer, expiry, cert count) via crt.sh. No cipher-suite or protocol-version scan: browsers do not expose handshakes.
SSL Checker
Check SSL/TLS certificate details for any domain via public certificate APIs. View issuer, validity period, days remaining, and SANs. Expiry alerts catch outages before users do — free, no signup.