PEM header parse

Client

Identify PEM block type from header.

Type: RSA PRIVATE KEY
PKCS#1 RSA private key
(PEM envelope only · paste full block for tools)

Nearby workflows on Toolcore

  • JWT verify (RSA / ECDSA) — Verify RS256/384/512 or ES256/384/512 JWTs with a PEM public key in the browser—Web Crypto only. before you trust a token, digest, or key material in production.
  • SSH key generator — Generate Ed25519 or RSA 2048 key pairs as PEM in the browser—optional OpenSSH public line for Ed25519. before you trust a token, digest, or key material in production.
  • JWT sign (RSA / ECDSA) — Sign RS256/384/512 or ES256/384/512 JWTs with a PKCS#8 PEM private key in the browser—Web Crypto only. before you trust a token, digest, or key material in production.
  • Hash identifier — Guess digest type from hex length, Base64 shape, or bcrypt/Argon2 prefixes—heuristic, local only. before you trust a token, digest, or key material in production.

About this tool

Identify PEM block types before import.

Common use cases

  • PEM header parse for quick local checks without uploading data.
  • Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

  • Unexpected input shape

    See the intro and how-to notes for accepted formats.

FAQ

Is processing local?

Yes—this runs entirely in your browser.

Agent prefill?

Use q or qb for the main text field when supported.

More tools

Related utilities you can open in another tab—mostly client-side.