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.

35.com/三五互联	Active24	Akamai EdgeDNS	Alibaba Cloud DNS
AlibabaCloud ESA	all-inkl	Alwaysdata	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	Bluecat v2	BookMyName
Brandit (deprecated)	Bunny	Checkdomain	Civo
Cloud.ru	CloudDNS	Cloudflare	ClouDNS
CloudXNS (Deprecated)	ConoHa v2	ConoHa v3	Constellix
Core-Networks	CPanel/WHM	DDnss (DynDNS Service)	Derak Cloud
deSEC.io	Designate DNSaaS for Openstack	Digital Ocean	DirectAdmin
DNS Made Easy	DNSExit	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
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	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
TodayNIC/时代互联	TransIP	UKFast SafeDNS	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.