Verifiers, Converters & Diagnostic Tools
Fast, offline-first client-side web tools to verify, convert, and test cryptographic credentials, keys, and status lists.
IDENTITY TOOL · SD-JWT & KEY BINDING
SD-JWT & Key-Binding (KB) Verifier
Verify issuer signatures, recompute salted SHA-256 selective disclosure digests (`~sd`), check claim integrity, and test Key-Binding (KB-JWT) proof of possession 100% in-browser.
CRYPTOGRAPHY · KEY FORMAT CONVERTER
JWK ↔ PEM ↔ Base64 Key Converter
Convert Ed25519, RSA, and ECDSA keys between JSON Web Key (JWK), PKCS#8 / SPKI PEM format, Hex, and Base64URL in-browser via the native Web Crypto API.
REVOCATION · W3C BITSTRING STATUS LIST
Bitstring Status List & Revocation Decoder
Decode gzipped base64 bitstring status lists (W3C Bitstring Status List 2021) and inspect credential revocation status at any bit index (0–100,000+).
VALIDATION · OPEN BADGES 3.0 & W3C VC
JSON-LD & Open Badges 3.0 Schema Verifier
Validate structural compliance, `@context` schemas, mandatory claims, and proof objects for 1EdTech Open Badges 3.0 and W3C VC 2.0 payloads.