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
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.