Tools / Hash Identifier
Hash Identifier
Identify a hash by its length, charset, and prefix, or generate one from text. Identification is a heuristic guess based on shape — many algorithms share the same digest length.
MD5 isn't available via the browser's Web Crypto API — use the identifier for MD5 hashes you already have.
// About this tool
Hash Identifier
The hash identifier tells you which hashing algorithm a hash most likely comes from by analyzing its length, character set, and structure — MD5, SHA-1, SHA-256, and the rest of the common families.
It also generates SHA-1, SHA-256, SHA-384, and SHA-512 digests from any text you provide. Both features run entirely in your browser using the Web Crypto API, so sensitive values are never uploaded.
Identification by shape is probabilistic, not definitive: many algorithms produce hashes of the same length. Treat the result as a strong hint and confirm against the system that produced the hash when you can.
// When to use it
Identify a hash found in forensic work
Paste an unknown hash from a file listing or database dump and get the likely algorithm at a glance.
Generate a digest for integrity checking
Hash a value with SHA-256 or SHA-512 locally and compare against a published checksum without uploading the original.
Check which algorithm a database uses
A hash's length narrows the field fast — useful when you are auditing legacy systems with unknown password storage schemes.
// Questions
How does hash identification work?
The tool analyzes the hash's length, character set, and pattern, then lists the algorithms whose output shape matches. It is a heuristic — the same hash length can match several algorithms.
Is my hash or text uploaded?
No. Identification and digest generation both run locally in your browser. Nothing is sent to a server.
Can I crack or reverse a hash with this tool?
No. This tool identifies and generates hashes; it does not attempt to reverse them. Reversing a hash requires a brute-force or lookup attack, which is out of scope here.
Which digest algorithms can it generate?
SHA-1, SHA-256, SHA-384, and SHA-512, computed in your browser with the Web Crypto API.
// Related tools