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certbot/certbot

📈 Trending★ 33,034PythonAudience · developerComplexity · 2/5ActiveLicenseSetup · moderate

TLDR

Certbot automates getting HTTPS certificates from Let's Encrypt and configures your web server to use them with a single command.

Mindmap

mindmap
  root((certbot))
    What it does
      Gets HTTPS certificates
      Configures web servers
      Renews automatically
    How it works
      Talks to Let's Encrypt
      Uses ACME protocol
      Updates server settings
    Use cases
      Secure small websites
      Enable padlock in browser
      Simplify certificate renewal
    Tech stack
      Python
      Command-line tool
      Open source

Things people build with this

USE CASE 1

Enable HTTPS on a personal blog or small website without manual certificate setup.

USE CASE 2

Automatically renew expiring SSL certificates so your site stays secure without intervention.

USE CASE 3

Configure a web server to use HTTPS with a single command instead of editing config files by hand.

Tech stack

PythonACME protocolLet's Encrypt

Getting it running

Difficulty · moderate Time to first run · 30min

Requires root/sudo access and a running web server (nginx/Apache) or DNS access for certificate validation.

Free to use and modify under the Apache 2.0 license, including for commercial purposes.

In plain English

Certbot is a command-line tool from the EFF that automates obtaining HTTPS certificates and optionally configuring your server to use them. Normally, setting up HTTPS, the secure connection that shows a padlock in your browser, requires manually requesting a certificate from a certificate authority and updating your server settings. Certbot handles both steps: it communicates with Let's Encrypt or any other certificate authority that supports the ACME protocol to get a valid certificate, and can configure your server to use it automatically. Written in Python, it is designed to make HTTPS setup as simple as running a single command, removing the manual steps that often make secure web hosting difficult for non-experts. The README does not provide further detail about its features, architecture, supported platforms, or use cases, so a complete explanation is not possible from the provided data alone.

Copy-paste prompts

Prompt 1
How do I use Certbot to get a free HTTPS certificate for my domain and set it up on my web server?
Prompt 2
Show me the Certbot command to automatically renew my SSL certificate before it expires.
Prompt 3
I want to use Certbot with my nginx server, what are the steps to install and configure it?
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Generated 2026-05-18 · Model: sonnet-4-6 · Verify against the repo before relying on details.