Usage statistics and market share of Let’s Encrypt as SSL certificate authority on websites

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These diagrams show the usage statistics of Let’s Encrypt as SSL certificate authority on the web. See technologies overview for explanations on the methodologies used in the surveys. Our reports are updated daily.

Let’s Encrypt is used as SSL certificate authority by 64.8% of all the websites whose SSL certificate authority we know. This is 60.8% of all websites.

Historical trend

This diagram shows the historical trend in the percentage of websites using Let’s Encrypt.
Our dedicated trend survey shows more SSL certificate authorities usage and market share trends. Historical trends in the usage of Let’s Encrypt

You can find growth rates of Let’s Encrypt compared to all other SSL certificate authorities in our Let’s Encrypt market report.

Market position

This diagram shows the market position of Let’s Encrypt in terms of popularity and traffic compared to the most popular SSL certificate authorities.
Our dedicated market survey shows more SSL certificate authorities market data.

Market position of Let’s Encrypt

Popular sites using Let’s Encrypt

Random selection of sites using Let’s Encrypt

Sites using Let’s Encrypt only recently

More examples of sites

You can find more examples of sites using Let’s Encrypt in our Let’s Encrypt market report, or you can request a custom web technology market report.

Technology comparisons

Our visitors often compare the usage statistics of Let’s Encrypt with GlobalSign and Sectigo and DigiCert.

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Technology Brief
Let’s Encrypt
Category: SSL Certificate Authorities
Let’s Encrypt is a free, automated, and open certificate authority provided by the Internet Security Research Group.
Website: letsencrypt.org