~/tools/hash-id
Hash identifier
Paste a hash and get the likely algorithms, inferred from its length and character set. A triage helper for CTFs — heuristic, not authoritative.
Candidates
No known algorithm matches that length and character set. Prefixed formats
($2y$, $6$…)
and plain hex of a standard digest length are the most reliably identified.
heuristic only — many algorithms share a digest length (MD5, NTLM, and MD4 are all 32 hex chars), so identical lengths are indistinguishable from the hash alone. Treat this as a ranked starting point, not a definitive answer.