SSLPin CLI

A lightweight CLI tool that connects to an HTTPS domain, reads its SSL/TLS certificate, and generates fingerprints and SPKI pins — all locally.

Features

• SHA1 & SHA256 fingerprints
• SPKI pins (Base64/Hex)
• Certificate validity & expiration
• Issuer, subject, serial number
• TLS connection details

Installation

npm install -g sslpin
# or using Yarn Berry
yarn global add sslpin

Usage

# Using npx (recommended)
npx sslpin www.google.com

# Or if installed globally
sslpin www.google.com

Options

Supports HTTPS URLs (auto-strips https://). Use --help for all options.

• -v, --version: Show version
• --json: Output in JSON format
• -h, --help: Show help

Contributing

We welcome contributions! Please see our Contributing Guide for details.

License

Licensed under the MIT License - see the LICENSE file for details.