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	DNSMint
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	FENO	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	Myra
MythicBeasts	Name.com	Namecheap	Namesilo
NearlyFreeSpeech.NET	NederHost	Neodigit	Netcup
Netlify	Netnod	NexDNS	Ngenix
Nicmanager	NIFCloud	Njalla	Nodion
NS1	Octenium	omg.lol	Online.net
Open Telekom Cloud	Openprovider	OpusDNS	Oracle Cloud
OVH	plesk.com	PointDNS/PointHQ	Porkbun
Poweradmin	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.