Command-line tool

cfssl

brew/cfssl

Checked 25 Oct 2026, 21:09 UTC · Listing refreshed from Homebrew, winget, npm, Scoop and cargo; npm packages checked against OSV.dev

CloudFlare's PKI toolkit

Website Source

At a glance

Type

Command-line tool

Install on

Windows, macOS, Linux

Last checked

25 Oct 2026, 21:09 UTC

Install it

Windows

scoop bucket add extras; scoop install extras/cfssl

macOS

brew install cfssl

Linux

brew install cfssl

Show certificate information of a host

cfssl certinfo -domain www.google.com

Decode certificate information from a file

cfssl certinfo -cert path/to/certificate.pem

Scan host(s) for SSL/TLS issues

cfssl scan host1 host2 ...

Browse

• Cloudflare tools
• Cloud and hosting

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