CSR Viewer
View the contents of a Certificate Signing Request (PKCS#10). Paste your data, then click to dissect it. Everything runs on your device, nothing is sent to a server.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
-----BEGIN CERTIFICATE REQUEST-----…
Example Output
Subject / Public key alg
How to Use
- 1Paste your data (PEM/Base64/token) into the Input field.
- 2Click the button (or press Ctrl+Enter) to dissect it.
- 3Read the decoded result in the Output field.
About CSR Viewer
A CSR (Certificate Signing Request) is the file you send to a CA to request a certificate. It contains a public key and subject information (e.g. domain name, organization).
This tool parses a PEM/DER CSR and shows its subject and public-key algorithm — useful to confirm the CSR holds the right data before sending it to a CA.
Checking a CSR prevents issuing a certificate with wrong details. Parsing is done in the browser; the CSR is not uploaded anywhere.
FAQ
Are my data or keys sent to a server?
No. CSR Viewer runs entirely in your browser using the Web Crypto API and client-side libraries. Your data, passwords, and keys never leave your device.