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THE FEUTEX TOOLKIT

PEM Block Inspector

Inspect PEM labels and decoded byte lengths without interpreting certificate trust.

Security workspace● Runs in your browser
01 Your input
02 Your result

How to use this tool

  1. Paste the input using the example format.
  2. Adjust options and run the tool.
  3. Inspect and copy or download the result.

Try this example

-----BEGIN TEST-----
YWJj
-----END TEST-----

Accuracy and scope

Inspects envelope and byte count only. Does not parse ASN.1, validate certificate signatures, dates, chains or key strength.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.