Certificate Chain and Expiry Explorer
Inspect a pasted PEM certificate bundle for validity dates, subjects and adjacent issuer signatures.
PEM inspection runs in your browser. Only certificates are accepted; private keys are not needed.
Using Certificate Chain and Expiry Explorer for open banking
Inspect a pasted PEM certificate bundle for validity dates, subjects and adjacent issuer signatures.
Sandbox example and expected result
Load a disposable demo certificate to inspect its expiry status and self-signature; paste a leaf-first RSA chain to check adjacent signatures.
Limitations and troubleshooting
Supports RSA certificates. An adjacent signature check is not a trust-store, hostname or revocation check. Self-signed does not mean trusted.
Where your input is processed
PEM inspection runs in your browser. Only certificates are accepted; private keys are not needed. Use synthetic test data.
Maintained by OpenFinanceTools. Guidance updated 23 October 2026. Testing and editorial approach