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	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
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	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
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.