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)	Gigahost.no	Glesys
Go Daddy	Google Cloud	Google Domains	Gravity
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	Neodigit	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
Syse	Technitium	Tencent Cloud DNS	Tencent EdgeOne
Timeweb Cloud	TransIP	UKFast SafeDNS	Ultradns
United-Domains	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.