Automatic Certificates and HTTPS for everyone.

Lego

ACME client and library for Let's Encrypt and other ACME CAs 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 180 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.

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

1cloud.ru	35.com/三五互联	Active24	Akamai EdgeDNS
Alibaba Cloud DNS	AlibabaCloud ESA	all-inkl	Alwaysdata
Amazon Lightsail	Amazon Route 53	Anexia CloudDNS	ANS SafeDNS
ArtFiles	ArvanCloud	Aurora DNS	Autodns
Axelname	Azion	Azure (deprecated)	Azure DNS
Baidu Cloud	Beget.com	Binary Lane	Bindman
Bluecat	Bluecat v2	BookMyName	Brandit (deprecated)
Bunny	Checkdomain	Civo	Cloud.ru
CloudDNS	Cloudflare	ClouDNS	CloudXNS (Deprecated)
ConoHa v2	ConoHa v3	Constellix	Core-Networks
CPanel/WHM	Czechia	DDnss (DynDNS Service)	Derak Cloud
deSEC.io	Designate DNSaaS for Openstack	Digital Ocean	DirectAdmin
DNS Made Easy	DNS Update (RFC2136)	DNSExit	dnsHome.de
DNSimple	DNSPod (deprecated)	Domain Offensive (do.de)	Domeneshop
DreamHost	Duck DNS	Dyn	DynDnsFree.de
Dynu	EasyDNS	EdgeCenter	Efficient IP
Epik	EuroDNS	Excedo	Exoscale
External program	F5 XC	freemyip.com	FusionLayer NameSurfer
G-Core	Gandi	Gandi Live DNS (v5)	Gigahost.no
Glesys	Go Daddy	Google Cloud	Google Domains
Gravity	Hetzner	Hosting.de	Hosting.nl
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	Ionos Cloud
IPv64	ISPConfig 3	ISPConfig 3 - Dynamic DNS (DDNS) Module	iwantmyname (Deprecated)
JD Cloud	Joker	Joohoi's ACME-DNS	KeyHelp
Leaseweb	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
Netnod	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	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
TodayNIC/时代互联	TransIP	Ultradns	United-Domains
Variomedia	VegaDNS	Vercel	Versio.[nl|eu|uk]
VinylDNS	Virtualname	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.