Let's Encrypt - Free SSL/TLS Certificates Skip navigation links Documentation Get Help Donate Make a Donation Become a Sponsor Current Sponsors and Funders Get Involved About Us Let's Encrypt Internet Security Research Group (ISRG) Frequently Asked Questions (FAQ) Policy and Legal Repository Service Status Statistics Careers Contact Languages ✓ English Deutsch Español Français עברית Bahasa Indonesia 日本語 한국어 Português do Brasil Русский Srpski Svenska Tiếng Việt 简体中文 繁體中文 A nonprofit Certificate Authority providing TLS certificates to 225 million websites. Read our 2020 Annual Report Get Started Sponsor From our blog Jan 21, 2021 The Next Gen Database Servers Powering Let's Encrypt Database performance is the single most critical factor in our ability to scale while meeting service level objectives. In late 2020, we upgraded our database servers and we’ve been very happy with the results. Read more Dec 28, 2020 A Year-End Letter from the Executive Director of Let's Encrypt and ISRG ISRG’s first project, Let’s Encrypt, has been wildly successful. We’re now helping to secure more than 225 million websites and the Web is making great progress towards 100% HTTPS. We’ve put in a lot of hard work and dealt with some challenges along the way, but at a high level the outlook is quite sunny. I’m incredibly proud to share some of what our organization has accomplished in 2020. Read more Dec 21, 2020 Extending Android Device Compatibility for Let's Encrypt Certificates We’re happy to announce that we have developed a way for older Android devices to retain their ability to visit sites that use Let’s Encrypt certificates after our cross-signed intermediates expire. We are no longer planning any changes in January that may cause compatibility issues for Let’s Encrypt subscribers. Read more Subscribe via RSS Major Sponsors and Funders Support a more secure and privacy-respecting Web. Donate GitHub Twitter View our privacy policy. View our trademark policy. Let's Encrypt is a free, automated, and open certificate authority brought to you by the nonprofit Internet Security Research Group (ISRG). 548 Market St, PMB 57274, San Francisco, CA 94104-5401, USA Linux Foundation is a registered trademark of The Linux Foundation. Linux is a registered trademark of Linus Torvalds.