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
  • Support draft-ietf-acme-dns-persist-01: Challenge for Persistent DNS TXT Record Validation
• Comes with more than 200 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	51DNS	Abion
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 DNS	Baidu Cloud	Beget.com	Binary Lane
Bindman	Bluecat	Bluecat v2	BookMyName
Bunny	Checkdomain	Civo	Cloud.ru
CloudDNS	Cloudflare	ClouDNS	Connbyte
ConoHa v2	ConoHa v3	Constellix	Core-Networks
CPanel/WHM	Curanet	Czechia	DanDomain
DDnss (DynDNS Service)	Derak Cloud	deSEC.io	Designate DNSaaS for Openstack
Digital Ocean	Dinahosting	DirectAdmin	DNS Made Easy
DNS Update (RFC2136)	dns.la	DNS.services	DNScale
DNSExit	dnsHome.de	DNSimple	Domain Offensive (do.de)
Domeneshop	DreamHost	Duck DNS	Dyn
Dynadot	DynDnsFree.de	Dynu	EasyDNS
EdgeCenter	Efficient IP	Epik	EuroDNS
EUserv	Excedo	Exoscale	External program
F5 XC	Fornex	freemyip.com	FusionLayer NameSurfer
G-Core	Gandi	Gandi Live DNS (v5)	Gehirn
Gigahost.no	Glesys	Gname	Go Daddy
Google Cloud	Gravity	Hetzner	Hosting.de
Hosting.nl	Hostinger	Hosttech	HostUp
HTTP request	http.net	Huawei Cloud	Hurricane Electric DNS
HyperOne	IBM Cloud (SoftLayer)	IIJ DNS Platform Service	Infoblox
Infomaniak	Internet.bs	INWX	Ionos
Ionos Cloud	IPv64	ISPConfig 3	ISPConfig 3 - Dynamic DNS (DDNS) Module
JD Cloud	Joker	Joohoi's ACME-DNS	Katapult
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	NederHost	Neodigit
Netcup	Netlify	Netnod	Ngenix
Nicmanager	NIFCloud	Njalla	Nodion
NS1	Octenium	omg.lol	Online.net
Open Telekom Cloud	Oracle Cloud	OVH	plesk.com
PointDNS/PointHQ	Porkbun	PowerDNS	Rackspace
Rage4	Rain Yun/雨云	RcodeZero	reg.ru
Regfish	RimuHosting	RU CENTER	Sakura Cloud
Scaleway	ScanNet	Selectel	Selectel v2
SelfHost.(de|eu)	Servercow	Shellrent	Simply.com
Sonic	Spaceship	Stackpath (Deprecated)	Syse
Technitium	Tele3	Tencent Cloud DNS	Tencent EdgeOne
Timeweb Cloud	TodayNIC/时代互联	TransIP	UCloud
Ultradns	United-Domains	Variomedia	Veesp
VegaDNS	Vercel	Versio.[nl|eu|uk]	VinylDNS
Virtualname	VK Cloud	Volcano Engine/火山引擎	Vscale
Vultr	Wannafind	webnames.ca	webnames.ru
Websupport	WEDOS	West.cn/西部数码	Xinnet
Yandex 360	Yandex Cloud	Yandex PDD	Zilore
Zone.ee	ZoneEdit	Zonomi

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