vjyas.online

PEM Decoder

Inspect PEM certificates and public keys. Shows DER size, SHA-256 fingerprint, and hex preview.

100% private

Live demo
PEM parse
Ready
PEM block
Certificate info

Auto-playing walkthrough — paste input, click decode, see the result

How to use PEM Decoder

  1. Paste a PEM certificate, public key, or private key block.
  2. View DER size and SHA-256 fingerprint.
  3. Use with the JWT decoder for RS256 verification.

Frequently Asked Questions

Are private keys stored?
No. PEM content is processed only in memory in your browser.