Automatic Certificates and HTTPS for everyone.

Lego

Let's Encrypt client and ACME library written in Go.

Features

• ACME v2 RFC 8555
• Register with CA
• Obtain certificates, both from scratch or with an existing CSR
• Renew certificates
• Revoke certificates
• Robust implementation of all ACME challenges
  • HTTP (http-01)
  • DNS (dns-01)
  • TLS (tls-alpn-01)
• SAN certificate support
• Comes with multiple optional DNS providers
• Custom challenge solvers
• Certificate bundling
• OCSP helper function

Installation

How to install.

Usage

• as a CLI
• as a library

Documentation

Documentation is hosted live at https://go-acme.github.io/lego/.

DNS providers

Detailed documentation is available here.

Akamai EdgeDNS	Alibaba Cloud DNS	all-inkl	Amazon Lightsail
Amazon Route 53	ArvanCloud	Aurora DNS	Autodns
Azure	Bindman	Bluecat	Checkdomain
Civo	CloudDNS	Cloudflare	ClouDNS
CloudXNS	ConoHa	Constellix	deSEC.io
Designate DNSaaS for Openstack	Digital Ocean	DNS Made Easy	dnsHome.de
DNSimple	DNSPod (deprecated)	Domain Offensive (do.de)	Domeneshop
DreamHost	Duck DNS	Dyn	Dynu
EasyDNS	Epik	Exoscale	External program
freemyip.com	G-Core Labs	Gandi Live DNS (v5)	Gandi
Glesys	Go Daddy	Google Cloud	Hetzner
Hosting.de	Hosttech	HTTP request	Hurricane Electric DNS
HyperOne	IBM Cloud (SoftLayer)	IIJ DNS Platform Service	Infoblox
Infomaniak	Internet Initiative Japan	Internet.bs	INWX
Ionos	iwantmyname	Joker	Joohoi's ACME-DNS
Liara	Linode (v4)	Liquid Web	Loopia
LuaDNS	Manual	MyDNS.jp	MythicBeasts
Name.com	Namecheap	Namesilo	NearlyFreeSpeech.NET
Netcup	Netlify	Nicmanager	NIFCloud
Njalla	NS1	Open Telekom Cloud	Oracle Cloud
OVH	Porkbun	PowerDNS	Rackspace
reg.ru	RFC2136	RimuHosting	Sakura Cloud
Scaleway	Selectel	Servercow	Simply.com
Sonic	Stackpath	Tencent Cloud DNS	TransIP
UKFast SafeDNS	Ultradns	Variomedia	VegaDNS
Vercel	Versio.[nl/eu/uk]	VinylDNS	VK Cloud
Vscale	Vultr	Websupport	WEDOS
Yandex Cloud	Yandex PDD	Zone.ee	Zonomi

If your DNS provider is not supported, please open an issue.