WorkspaceSecurity & CryptographyClient-Side Sandbox

Certificate Decoder

Inspect PEM-encoded X.509 certificates (-----BEGIN CERTIFICATE-----), compute SHA-256/SHA-1 fingerprints, and parse ASN.1 DER structures.

Input Buffer
3 ln · 132 ch · 132 B
ENCODING: UTF-8AUTO-RUN: ENABLED
Output Buffer
OUT: 1 LN · 0 B⌘↵ RUN · ⌘⇧C COPY

How to Use Certificate Decoder

  1. Paste a PEM-encoded X.509 certificate.
  2. Inspect DER byte length, SHA-256 & SHA-1 certificate thumbprints, readable ASCII strings (CN/O/SANs), and ASN.1 tag breakdown.

Keyboard Shortcuts & Sandbox Guarantee

Run / Process tool outputCtrl + Enter
Copy primary output to clipboardCtrl + Shift + C
Open global command paletteCtrl + K