Is CSR Decoder free to use?

Yes, CSR Decoder on SarmoTools is completely free. All processing happens in your browser — no sign-up, no data collection, no server uploads.

CSR Decoder

Paste your encrypted CSR (PEM format) to view its contents, including the Common Name (CN) and Organization details.

CSR (Base64 PEM)

Common Name (CN) example.com

Organization (O) -

OU / Unit -

Email -

Country (C) -

Key Size -

Invalid CSR format or decryption failed.

What is CSR Decoder?

Free online CSR decoder. Instantly decode Certificate Signing Requests (CSR) to view Common Name, Organization, and Public Key details right in your browser.

How to use this tool?

Our CSR Decoder works entirely in your browser. All processing is done client-side, meaning your data never leaves your computer. Simply input your content, and the tool will provide instant results with premium accuracy.

Key Features

100% Private: Data stays in your browser.
Lightning Fast: Instant results as you type.
Zero Cost: Free to use forever.