Skip to main content

OpenSSL Cert Generator

Build openssl commands visually — no memorizing flags. Generate self-signed certificates, CSRs, CA certs, and format conversions. Copy the ready-to-run commands for your terminal.

Certificate Details

Comma-separated. Format: DNS:domain, IP:address

Commands

 
 
           
 
 Install OpenSSL: brew install openssl (macOS) ·
apt install openssl (Ubuntu) ·
    Already included on most Linux distros and macOS.
    Windows: use Win32 OpenSSL or WSL.

 
 Share this tool:  
X / Twitter
  
LinkedIn
 
   
 
  ✓ 60,000+ developers use DevPlaybook
  ★★★★★ 4.8 / 5 on Gumroad   ✓
MIT licensed · Instant download
  ✓
No login required
 
 
 
 
 
Related Products
 on Gumroad 
 
  
 🚀 $19 
 
Premium Workflow Pack
 
Production-grade workflows, architecture guides, and deployment scripts for teams that ship. 10 advanced CI/CD workflows (blue-green, canary, E2E, security), 5 architecture deep-dives, code review checklist, PR process guide, and 5 battle-tested Bash deployment scripts.
 
Buy on Gumroad →
  
 ⚙️ $19 
 
GitHub Actions CI/CD Templates Pack
 
12 production-ready GitHub Actions workflow templates covering Node.js, Python, Docker, multi-environment deployments, security scanning, and auto-changelog. Copy, paste, ship.
 
Buy on Gumroad →
  
 ⚡ $29 
 
Developer Productivity Bundle
 
Stop rebuilding the same setup every project. 51 VSCode snippets, 40 Git aliases, 5 Docker Compose stacks, 5 GitHub Actions workflows, 5 README templates, and a dotfiles kit. Set up a professional dev environment in under an hour.
 
Buy on Gumroad →
  
  
You Might Also Need
 
  
mTLS Certificate Chain Builder
 
Visualize mTLS certificate chains, validate PEM certificates, and generate OpenSSL commands for CA, server, and client certificates.
 
Open free tool →
  
CSS Clip-Path Generator
 
Generate CSS clip-path values visually. Choose from 16 polygon presets (triangle, star, arrow, hexagon), circle, ellipse, and inset shapes. Live preview, one-click copy. Free, no signup.
 
Open free tool →
  
HTTP Security Headers Generator
 
Generate HTTP security headers configuration for nginx and Apache. Configure HSTS, CSP, X-Frame-Options, Referrer-Policy, and more with toggle switches. Copy ready-to-use configs.
 
Open free tool →
  
 
More Free Tools
 
  mTLS Certificate Chain Builder  CSS Clip-Path Generator  HTTP Security Headers Generator  SSL Certificate Checker  SSL Certificate Decoder  HTTP Security Headers Checker  TLS Certificate Decoder  nginx Config Generator  WebSocket Test Client  Content Security Policy Builder  HTTP Header Inspector  SSL Certificate Expiry Checker  Prompt Injection Tester  GCP Service Account Key Auditor  GraphQL Client Configurator  Turso Edge DB Explorer  HTTP Headers Analyzer  AI System Guardian  API Request Builder  HTTP API Tester  Docker Compose Generator  Git Command Builder  .htaccess Generator  Password Strength Checker  WebSocket Tester  Dockerfile Generator  JSON Path Finder  CSP Header Builder  Load Balancer Config Generator  AWS IAM Policy Validator  Caddy Caddyfile Generator  HTTP Cookie Parser  SBOM Generator  Redis Command Tester  Docker Run Command Builder  CI/CD Pipeline Generator  HTTP Header Analyzer  Dockerfile Linter  NATS Connection String Builder  OAuth2 Flow Visualizer  HashiCorp Consul Service Mesh Guide  AES Encryptor / Decryptor  ArgoCD Application Generator  Kubernetes Resource Calculator  Docker Layer Optimizer  Password Strength Analyzer  
 
 
Related Articles
 
  
Apr 2, 2026 · 13 min read
 
DevSecOps Tools Checklist 2026: 20 Essential Tools for Shift-Left Security
 
Complete DevSecOps tools checklist for 2026. 20 essential SAST, DAST, SCA, secrets scanning, and container security tools with free/open-source options.
  
Mar 28, 2026 · 18 min read
 
Complete Guide to HTTP Security Headers: CSP, HSTS, and Modern Browser Security 2026
 
Master HTTP security headers in 2026: Content-Security-Policy configuration, HSTS preloading, Permissions-Policy, COEP/COOP for cross-origin isolation, and real-world configs for nginx, Apache, and Next.js.
  
Invalid Date · 12 min read
 
Kubernetes Security Hardening: 15 Essential Practices
 
A comprehensive guide to Kubernetes security hardening—RBAC, Pod Security Standards, network policies, secrets management, and container scanning with real examples.
  
Apr 2, 2026 · 11 min read
 
Nginx Configuration Guide for Web Developers 2026: Reverse Proxy, SSL & Performance
 
Master Nginx configuration in 2026. Complete guide covering reverse proxy setup, SSL/TLS with Let's Encrypt, gzip compression, caching, rate limiting, load balancing, and common gotchas.
  
Apr 2, 2026 · 12 min read
 
Zero-Trust Architecture Implementation Guide for Developers 2026
 
Practical zero-trust architecture guide for developers: identity verification, network segmentation, service mesh, mTLS, and step-by-step implementation roadmap.
  
 
 
  
 
 
 
Enjoying this tool? Get more like it.
 
Weekly developer tool guides, productivity playbooks & AI tricks. Free. No spam.
 
 
  
 
 
  
 
 
 
 DevPlaybook Pro 7 days free 
 
Unlock AI-Powered Dev Tools
 
     
  • ⚡ AI Code Review, Doc Generator & SQL Builder
    •  
  • ⚡ All premium templates & early access
    •  
  • ⚡ Member discounts on Gumroad products
    •  
 
 
 
Start Free Trial →
 
$9/mo after trial · Cancel anytime
 
 
 
  
 
Want the full toolkit?
 
Get DevPlaybook Pro
 

Every template, guide, boilerplate, and automation script in one bundle.
    13 premium products — grab them all at once and save big.

 
 $79 
 $241 separately Save $162 (67% off) 
 
 
Get DevPlaybook Pro — $79 →
 
MIT licensed · Instant download · No subscription
 See what's included → Browse all deals →