Automatic Certificates and HTTPS for everyone.

Lego

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

lego is an independent, free, and open-source project, if you value it, consider supporting it! ❤️

Everybody thinks that the others will donate, but in the end, nobody does.

So if you think that lego is worth it, please consider donating.

Features

• ACME v2 RFC 8555
  • Support RFC 8737: TLS Application‑Layer Protocol Negotiation (ALPN) Challenge Extension
  • Support RFC 8738: certificates for IP addresses
  • Support RFC 9773: Renewal Information (ARI) Extension
  • Support draft-ietf-acme-profiles-00: Profiles Extension
• Comes with about 170 DNS providers
• Register with CA
• Obtain certificates, both from scratch or with an existing CSR
• Renew certificates
• Revoke certificates
• Robust implementation of ACME challenges:
  • HTTP (http-01)
  • DNS (dns-01)
  • TLS (tls-alpn-01)
• SAN certificate support
• CNAME support by default
• 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.

Active24	Akamai EdgeDNS	Alibaba Cloud DNS	AlibabaCloud ESA
all-inkl	Amazon Lightsail	Amazon Route 53	Anexia CloudDNS
ArvanCloud	Aurora DNS	Autodns	Axelname
Azion	Azure (deprecated)	Azure DNS	Baidu Cloud
Beget.com	Binary Lane	Bindman	Bluecat
BookMyName	Brandit (deprecated)	Bunny	Checkdomain
Civo	Cloud.ru	CloudDNS	Cloudflare
ClouDNS	CloudXNS (Deprecated)	ConoHa v2	ConoHa v3
Constellix	Core-Networks	CPanel/WHM	Derak Cloud
deSEC.io	Designate DNSaaS for Openstack	Digital Ocean	DirectAdmin
DNS Made Easy	dnsHome.de	DNSimple	DNSPod (deprecated)
Domain Offensive (do.de)	Domeneshop	DreamHost	Duck DNS
Dyn	DynDnsFree.de	Dynu	EasyDNS
EdgeCenter	Efficient IP	Epik	Exoscale
External program	F5 XC	freemyip.com	G-Core
Gandi	Gandi Live DNS (v5)	Glesys	Go Daddy
Google Cloud	Google Domains	Hetzner	Hosting.de
Hostinger	Hosttech	HTTP request	http.net
Huawei Cloud	Hurricane Electric DNS	HyperOne	IBM Cloud (SoftLayer)
IIJ DNS Platform Service	Infoblox	Infomaniak	Internet Initiative Japan
Internet.bs	INWX	Ionos	IPv64
iwantmyname (Deprecated)	Joker	Joohoi's ACME-DNS	KeyHelp
Liara	Lima-City	Linode (v4)	Liquid Web
Loopia	LuaDNS	Mail-in-a-Box	ManageEngine CloudDNS
Manual	Metaname	Metaregistrar	mijn.host
Mittwald	myaddr.{tools,dev,io}	MyDNS.jp	MythicBeasts
Name.com	Namecheap	Namesilo	NearlyFreeSpeech.NET
Netcup	Netlify	Nicmanager	NIFCloud
Njalla	Nodion	NS1	Octenium
Open Telekom Cloud	Oracle Cloud	OVH	plesk.com
Porkbun	PowerDNS	Rackspace	Rain Yun/雨云
RcodeZero	reg.ru	Regfish	RFC2136
RimuHosting	RU CENTER	Sakura Cloud	Scaleway
Selectel	Selectel v2	SelfHost.(de|eu)	Servercow
Shellrent	Simply.com	Sonic	Spaceship
Stackpath	Technitium	Tencent Cloud DNS	Tencent EdgeOne
Timeweb Cloud	TransIP	UKFast SafeDNS	Ultradns
Variomedia	VegaDNS	Vercel	Versio.[nl|eu|uk]
VinylDNS	VK Cloud	Volcano Engine/火山引擎	Vscale
Vultr	webnames.ca	webnames.ru	Websupport
WEDOS	West.cn/西部数码	Yandex 360	Yandex Cloud
Yandex PDD	Zone.ee	ZoneEdit	Zonomi

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