My Web Utils: Free Online Dev Tools

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SSL Certificate Decoder

Paste or upload a PEM-encoded SSL certificate to view its details.

PEM Encoded Certificate

Or Upload Certificate File

Developer Note

This tool provides a conceptual UI for SSL certificate decoding. Full client-side parsing of X.509 certificates and calculation of fingerprints requires dedicated cryptographic libraries (e.g., @peculiar/x509, WebCrypto API). The displayed decoded information is currently placeholder data.

Paste or upload a PEM certificate to see its details.