Certificate Inspector

Certificate Inspector online — free

Inspect PEM X.509 certificates and fingerprints.

Use the tool

Full tool — runs in your browser. No sign-up required.

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What does this certificate inspector tool do?

Inspect PEM X. Open the tool in your browser — no account or install required.

Does it support Runs locally in your browser?

Yes — runs locally in your browser.

Is my data sent to a server?

No — processing runs locally in your browser. Your files and inputs do not leave your device unless the tool explicitly uses the network.