Certify The Web

Manage free https certificates for IIS, Windows and other services

Professional Certificate Management for Windows, powered by Let's Encrypt

Easily install and auto-renew free SSL/TLS certificates from letsencrypt.org and other ACME Certificate Authorities for your IIS/Windows servers. Setting up https has never been easier. More features..

Screenshot of Certify The Web Desktop UI

Version 5.5.2

Latest stable release
Download 5.5.2

Alternatively download using PowerShell

Supported OS: Windows Server 2012 R2 (or higher, includes Windows 10) with .Net 4.6.2 (or higher).
The app requires outgoing https for API calls, proxies are not officially supported.

Digitally Signed as Publisher 'Webprofusion Pty Ltd'

File SHA256 as generated by certutil -hashfile SHA256: dec2e028b742c54d322e960bccccd1cf16a3c365f0e988ff83bcb674ab668635

Please backup your c:\programdata\certify\ folder before updating between major versions.


Used daily by more than 100,000 people and organisations around the world, including:


The free Community Edition of the app is intended for evaluation or individual use. It will manage up to 5 certificates per server, with community support. To manage many certificates and gain access to support via our email helpdesk you can purchase a license key. Funded organisations are required to use a licensed version once they have completed their evaluation.