Passwords, hashes, strength checks. All free, all private.
Strong random passwords, offline.
MD5, SHA-1, SHA-256 in your browser.
Mask, range, hosts, binary.
Trimmed OUI table, offline.
Common ports table (no scan).
Needs bcrypt lib — coming soon.
Decode header/payload only.
Validate + version/variant.
Sandbox-only test numbers.
Length + mod-97 check.
ISBN-10 and ISBN-13.
Web Crypto HMAC-SHA.
Offline structure check.
Needs libphonenumber — coming soon.
IDN encode/decode.
Codepoints of any text.
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