Tessio Labs

Free validators for EU digital identity and trust. Each one answers a single question rigorously: does this credential or signature actually validate, and is its issuer or signer actually trusted in the EU?

Decoding is commoditized. The edge here is validation plus EU trust anchoring, delivered as one consistent hub by the people who build Tessio. The tools are free, and the ones that run in your browser store nothing you paste.

SD-JWT VC Validator

Live

Decode an SD-JWT verifiable credential, expand its disclosures, and check that each one binds to the signed digests.

For EUDI credential developers · Open the tool →

eIDAS Signature Validator

In progress

Validate a PAdES, XAdES, CAdES, JAdES, or ASiC signature and its qualification against the EU trusted lists.

For Signing and .NET developers

mdoc / mDL Validator

Planned

Validate an ISO 18013-5 mobile document, its Mobile Security Object, and its issuer trust chain.

For Wallet and verifier developers

EU Trusted List Checker

Planned

Check whether a certificate or issuer is a qualified EU trust service, and which national list it sits on.

For Compliance and PKI engineers